godel

noun

How to pronounce godel?

/'ɡydəl/

What is the definition of godel?

nounUnited States mathematician (born in Austria) who is remembered principally for demonstrating the limitations of axiomatic systems (1906-1978)

What does the word "godel" mean?

  • Godel is a surname of German origin.
  • It is also the surname of the mathematician Kurt Godel.

Who is Kurt Godel?

  • Kurt Godel was an Austrian mathematician, logician, and philosopher.
  • He is best known for his incompleteness theorems in mathematical logic.

What are the incompleteness theorems by Kurt Godel?

  • The incompleteness theorems are two theorems in mathematical logic.
  • They state that for any consistent axiomatic system within which a certain amount of elementary arithmetic can be carried out, there are statements about arithmetic that are true, but cannot be proven within that system.

Where did Kurt Godel work?

  • Kurt Godel worked at the Institute for Advanced Study in Princeton, New Jersey, USA.
  • He joined the institute in 1940 and remained there for the rest of his life.

What is the significance of Godel's incompleteness theorems?

  • Godel's incompleteness theorems have had a profound impact on the foundations of mathematics and logic.
  • They have led to a deeper understanding of the limits of formal systems and the nature of mathematical truth.

Are there any other famous mathematicians with the surname Godel?

  • No, Kurt Godel is the most well-known mathematician with the surname Godel.

Is Godel a common surname?

  • No, Godel is not a very common surname.
  • It is relatively rare and mainly associated with people of German origin.

What other fields is Kurt Godel known for?

  • Apart from mathematics, logic, and philosophy, Kurt Godel also made contributions to theoretical physics.
  • He wrote several papers on the subject of cosmology and the possibility of time travel.

Is there a connection between Godel's incompleteness theorems and Gödel, Escher, Bach?

  • Yes, there is a connection between Godel's incompleteness theorems and the book Gödel, Escher, Bach: An Eternal Golden Braid by Douglas Hofstadter.
  • The book explores the concepts of self-reference and formal systems, which are central to Godel's work.

Is there a pronunciation guide for the word "godel"?

  • Godel is pronounced as "goe-dell".
  • The "oe" is pronounced like the "e" in "bed" and the "ell" is pronounced like the "l" in "bell".

How do you pronounce 'godel' and what is the meaning of 'godel'?

purkinje

noun

How to pronounce purkinje?

/pər'kɪndʒi/

What is the definition of purkinje?

nounBohemian physiologist remembered for his discovery of Purkinje cells and the Purkinje network (1787-1869)

What is the meaning of purkinje?

  • Purkinje refers to a type of cell found in the cerebellum, a part of the brain responsible for coordination and balance.

Who discovered purkinje cells?

  • Purkinje cells were named after the Czech anatomist Jan Evangelista Purkyně, who discovered them in 1837.

What is the function of purkinje cells?

  • Purkinje cells are involved in the regulation and coordination of movements. They receive input from other cells in the cerebellum and transmit signals that help control muscle activity.

Where are purkinje cells located?

  • Purkinje cells are located in the cerebellar cortex, which is the outer layer of the cerebellum.

How do purkinje cells look like?

  • Purkinje cells have a large, flask-shaped cell body with multiple branches called dendrites. These dendrites have a characteristic tree-like appearance and are covered with tiny spines called dendritic spines.

What are the unique characteristics of purkinje cells?

  • Purkinje cells have a single axon that extends into the deeper layers of the cerebellum, forming a complex network of connections with other cells. They also have a high concentration of neurotransmitters, which are chemicals that transmit signals between nerve cells.

Are purkinje cells found in other parts of the brain?

  • Purkinje cells are unique to the cerebellum and are not found in other parts of the brain.

What happens if purkinje cells are damaged or lost?

  • Damage or loss of purkinje cells can lead to problems with coordination, balance, and motor control. It can result in conditions such as ataxia, a disorder characterized by unsteady movements.

How are purkinje cells studied?

  • Purkinje cells are often studied using various techniques, including electrophysiology, imaging, and genetic manipulation. Scientists use these methods to understand the role of purkinje cells in motor control and diseases of the cerebellum.

Are there any diseases associated with purkinje cells?

  • Yes, there are diseases associated with purkinje cells. For example, spinocerebellar ataxias are a group of genetic disorders that specifically affect purkinje cells, leading to problems with coordination and balance.

How to pronounce 'purkinje' and what is the meaning of 'purkinje'

petechiae

How to pronounce petechiae?

The word petechiae sounds like pe-te-chi-ae

What is the definition of petechiae?

  • Petechiae are pinpoint, round spots that appear on the skin as a result of bleeding under the skin.

What causes petechiae?

  • Petechiae are caused by broken capillaries under the skin, which allow tiny amounts of blood to leak out and form the spots.

What do petechiae look like?

  • Petechiae are small, flat, red or purple spots that do not disappear when pressure is applied.
  • They often appear in clusters and can be seen on the skin, mucous membranes, or the white part of the eyes.

What are the symptoms of petechiae?

  • Aside from the appearance of petechiae, most people do not experience any symptoms.
  • However, if petechiae are accompanied by other signs, such as fever, bruising, or bleeding, it is important to seek medical attention.

How are petechiae diagnosed?

  • A healthcare provider can diagnose petechiae by conducting a physical examination and reviewing the patient's medical history.
  • In some cases, further tests, such as blood tests or a skin biopsy, may be necessary to determine the underlying cause of the petechiae.

What are the possible underlying causes of petechiae?

  • Petechiae can be caused by a variety of factors, including
  • - Injuries or trauma to the skin
  • - Certain infections, such as bacterial or viral infections
  • - Allergic reactions
  • - Medications that affect blood clotting
  • - Blood disorders
  • - Autoimmune disorders
  • - Leukemia
  • - Thrombocytopenia (low platelet count)

How are petechiae treated?

  • The treatment of petechiae depends on the underlying cause.
  • In many cases, petechiae resolve on their own without any specific treatment.
  • However, if petechiae are a symptom of an underlying condition, that condition may need to be treated.
  • For example, if petechiae are caused by a medication, the medication may need to be adjusted or discontinued.
  • It is important to seek medical advice for proper diagnosis and treatment.

Can petechiae be prevented?

  • Petechiae may not always be preventable, especially if they are caused by an underlying medical condition or injury.
  • However, some preventive measures include:
  • - Avoiding activities that may cause injuries or trauma to the skin
  • - Taking precautions to prevent infections
  • - Following medication instructions carefully
  • - Maintaining a healthy lifestyle

Are petechiae a sign of a serious condition?

  • In most cases, petechiae are not a cause for concern and resolve on their own.
  • However, in certain situations, petechiae may be a sign of a serious condition.
  • It is important to seek medical attention if the petechiae are accompanied by other symptoms, such as fever, bruising, or bleeding.

Can petechiae occur in children?

  • Yes, petechiae can occur in children.
  • They can be caused by similar factors as in adults, such as injuries, infections, or certain medical conditions.
  • If petechiae are observed in children, it is advisable to consult a healthcare provider for proper evaluation and diagnosis.

How to pronounce the word petechiae

mendicancy

noun

How to pronounce mendicancy?

The word mendicancy sounds like men-di-can-cy

What is the definition of mendicancy?

nouna solicitation for money or food (especially in the street by an apparently penniless person)
nounthe state of being a beggar or mendicant
Examples
  • they were reduced to mendicancy

What is the definition of mendicancy?

  • Mendicancy is the act or practice of begging for alms or charity.

What is the origin of the word mendicancy?

  • The word mendicancy comes from the Latin word 'mendicantia', which means begging.

What are synonyms for mendicancy?

  • Begging
  • panhandling
  • vagrancy
  • alms-seeking

What is the opposite of mendicancy?

  • Wealth
  • prosperity
  • affluence

What are some examples of mendicancy around the world?

  • Street beggars in urban areas
  • Religious mendicants who rely on donations
  • People with disabilities who beg for support

What are the social implications of mendicancy?

  • Mendicancy can be a sign of poverty and economic inequality
  • It can also involve issues of public safety and nuisance
  • Society's response to mendicancy varies, ranging from compassion to criminalization

Are there laws or regulations regarding mendicancy?

  • Different countries and regions have different laws regarding mendicancy
  • Some prohibit or regulate begging, while others have specific policies to address the issue

How is mendicancy viewed in different cultures?

  • In some cultures, mendicancy is seen as a legitimate way for people to seek help
  • In others, it may be stigmatized or viewed as a nuisance

Is mendicancy considered a profession?

  • Mendicancy is generally not considered a profession, as it is associated with poverty and the need for basic support

What are the psychological factors influencing mendicancy?

  • Mendicancy can be driven by factors such as desperation, lack of employment opportunities, and mental health issues

How is the word 'mendicancy' pronounced?

sesame

noun

How to pronounce sesame?

The word sesame sounds like ses-a-me
/'sɛsəmi/

What is the definition of sesame?

nounEast Indian annual erect herb; source of sesame seed or benniseed and sesame oil

What is the definition of sesame?

  • Sesame is a flowering plant native to Africa and India, known for its seeds which are used in cooking and as a source of oil.

What are the health benefits of sesame seeds?

  • Sesame seeds are rich in nutrients such as healthy fats, protein, fiber, vitamins, and minerals. They have been associated with various health benefits, including improving heart health, reducing inflammation, supporting bone health, and promoting digestive health.

How are sesame seeds used in cooking?

  • Sesame seeds are commonly used as a topping for bread, buns, and bagels. They can be used to make tahini (a paste used in hummus and other dishes), sesame oil (used for cooking and flavoring), and gomasio (a seasoning). Sesame seeds are also used in various Asian cuisines, dressings, sauces, and desserts.

What is tahini?

  • Tahini is a paste made from ground sesame seeds. It is commonly used in Middle Eastern and Mediterranean cuisines as a key ingredient in dishes like hummus, baba ganoush, and halva. Tahini has a creamy texture and nutty flavor.

Is sesame oil healthy?

  • Sesame oil is considered a healthy oil as it contains antioxidants, vitamin E, and beneficial fatty acids. It is commonly used in cooking and as a flavoring agent in various dishes. However, it is high in calories, so it should be consumed in moderation.

Are sesame seeds a good source of protein?

  • Yes, sesame seeds are a good source of plant-based protein. They contain all nine essential amino acids, making them a complete protein source. Including sesame seeds in your diet can contribute to meeting your protein needs.

Can sesame seeds help in weight loss?

  • Sesame seeds, when consumed in moderation as part of a balanced diet, can support weight loss. They are low in carbohydrates and high in fiber, which helps in promoting satiety and reducing calorie intake. However, it is important to consider the overall calorie intake and maintain a balanced diet for effective weight loss.

Are sesame seeds allergenic?

  • Sesame seeds are known to cause allergic reactions in some individuals. Sesame allergy is one of the major food allergies and can range from mild to severe. It is important for individuals with sesame allergy to avoid sesame-containing products and carefully read food labels.

What are some popular dishes that use sesame seeds?

  • Some popular dishes that use sesame seeds include sesame chicken, sesame noodles, sesame-crusted salmon, sesame candy, and sesame snaps. Sesame seeds are also used in sushi rolls, salad dressings, and various stir-fry recipes.

Can sesame seeds go bad?

  • Sesame seeds have a relatively long shelf life when stored properly. They should be stored in an airtight container in a cool and dry place. Over time, the flavor and nutritional content of sesame seeds may degrade, but they do not go bad in the same way as perishable foods. It is recommended to use them within 6-12 months for the best quality.

How to say sesame and what does sesame mean?

tlingit

noun

How to pronounce tlingit?

The word tlingit sounds like tlin-git
/'tlɪŋɡɪt/

What is the definition of tlingit?

nouna member of a seafaring group of North American Indians living in southern Alaska
nounthe Na-Dene language spoken by the Tlingit

What does the word 'tlingit' mean?

  • Tlingit is the name of an indigenous people from Southeast Alaska and Western Canada. It also refers to their language.

Where do the Tlingit people live?

  • The Tlingit people primarily live in Southeast Alaska, particularly in the city of Juneau, as well as in parts of Western Canada.

What is the Tlingit language?

  • The Tlingit language is a Native American language spoken by the Tlingit people. It is part of the Na-Dene language family.

Is the Tlingit language still spoken?

  • Yes, the Tlingit language is still spoken, although its usage has declined over the years. Efforts are being made to revitalize and preserve the language.

What are some key cultural aspects of the Tlingit people?

  • The Tlingit people have a rich cultural heritage, known for their totem poles, intricate art and carvings, traditional ceremonies, and oral traditions.

What is the traditional subsistence lifestyle of the Tlingit people?

  • Traditionally, the Tlingit people relied on hunting, fishing, and gathering for their subsistence. They have a deep connection to the land and water resources.

What are some traditional Tlingit artworks?

  • Some traditional Tlingit artworks include totem poles, masks, intricate basketry, regalia, and Chilkat blankets.

Do the Tlingit people have any traditional stories or legends?

  • Yes, the Tlingit people have a rich oral storytelling tradition. They have many legends, myths, and stories that have been passed down through generations.

What are some Tlingit cultural practices that are still observed today?

  • Some Tlingit cultural practices that are still observed today include potlatches (ceremonial feasts and gift-giving events), traditional dances, and the use of traditional regalia.

Are there any Tlingit cultural celebrations or events?

  • Yes, the Tlingit people have various cultural celebrations and events throughout the year, such as the Celebration, which is a major festival held in Juneau, Alaska.

How do you pronounce Tlingit?

chiaroscuro

noun

How to pronounce chiaroscuro?

The word chiaroscuro sounds like chi-a-ro-scu-ro
/ki,ɑrə'skjʊroʊ/

What is the definition of chiaroscuro?

nouna monochrome picture made by using several different shades of the same color

What is the definition of chiaroscuro?

  • Chiaroscuro is an artistic technique that refers to the bold contrast between light and dark in a painting or drawing.

What is the origin of the word chiaroscuro?

  • The word chiaroscuro comes from the Italian words 'chiaro', meaning light, and 'scuro', meaning dark.

Who popularized chiaroscuro in art?

  • Chiaroscuro was popularized by the Italian painter Caravaggio in the 17th century.

What is the purpose of chiaroscuro?

  • The purpose of chiaroscuro is to create a sense of depth, volume, and dramatic contrast in a work of art.

How is chiaroscuro achieved?

  • Chiaroscuro is achieved by using strong contrasts between light and dark tones in a composition.

What are some famous artists known for using chiaroscuro?

  • Aside from Caravaggio, other famous artists known for using chiaroscuro include Rembrandt, Leonardo da Vinci, and Peter Paul Rubens.

Is chiaroscuro limited to painting and drawing?

  • No, chiaroscuro can also be seen in other art forms such as photography and film.

What is the opposite of chiaroscuro?

  • The opposite of chiaroscuro is 'flat lighting', which lacks strong contrasts between light and dark.

How does chiaroscuro impact the mood of a painting?

  • Chiaroscuro can create a sense of drama, mystery, and intensity, depending on how the artist uses the contrast between light and dark.

Are there any modern artists who use chiaroscuro?

  • Yes, many contemporary artists still utilize chiaroscuro in their works to add depth and visual interest.

How to pronounce 'chiaroscuro'?

demographic

noun

How to pronounce demographic?

The word demographic sounds like de-mo-graph-ic
/,dimə'græfɪk/

What is the definition of demographic?

nouna statistic characterizing human populations (or segments of human populations broken down by age or sex or income etc.)
of or relating to demography
Examples
  • demographic surveys

What is the meaning of demographic?

  • Demographic refers to the characteristics of a population, such as age, gender, income, education, and other factors that influence its composition and behavior.

Why is demographic information important?

  • Demographic information is important because it helps us understand and analyze the characteristics of a population. It can provide insights into trends, preferences, and behaviors, which can be useful for businesses, governments, researchers, and organizations in various fields.

How is demographic information collected?

  • Demographic information can be collected through surveys, censuses, registration systems, market research, and social media analysis, among other methods. These data collection techniques help gather information about a population's age, gender, race, ethnicity, income, education, household size, and other relevant factors.

What are the types of demographic variables?

  • The types of demographic variables include age, gender, race, ethnicity, marital status, income, education level, occupation, household size, and residential location.

How is demographic data used in marketing?

  • Demographic data is used in marketing to segment the target audience and tailor marketing strategies to specific demographic groups. By understanding the characteristics and preferences of different demographic segments, marketers can create targeted campaigns and messages that resonate with their intended audience.

What is demographic analysis?

  • Demographic analysis is the process of examining and interpreting demographic data to gain insights into the characteristics and dynamics of a population. It involves analyzing trends, distributions, and relationships among demographic variables to understand population patterns and make informed decisions.

How does demographic change affect society?

  • Demographic change can have significant effects on society. It can impact the economy, healthcare systems, education, workforce, and social dynamics. For example, an aging population may strain healthcare and pension systems, while changes in birth rates can impact future workforce availability.

What are demographic trends?

  • Demographic trends are long-term patterns or changes in the characteristics of a population. Examples of demographic trends include aging populations, declining birth rates, increasing diversity, urbanization, and migration patterns.

What is the difference between demographics and psychographics?

  • Demographics refer to the objective characteristics of a population, such as age, gender, and income, while psychographics focus on the psychological and behavioral characteristics of individuals, such as attitudes, values, and lifestyle choices.

How can demographic data be used in public policy?

  • Demographic data is used in public policy to inform decision-making and resource allocation. It helps policymakers understand the needs and preferences of different population groups, evaluate the impact of policies on specific demographics, and develop targeted interventions to address social issues.

How to pronounce 'demographic' and what is the meaning of 'demographic'?

damocles

noun

How to pronounce damocles?

The word damocles sounds like dam-o-cles
/'dæmə,kliz/

What is the definition of damocles?

nounthe Greek courtier to Dionysius the Elder who (according to legend) was condemned to sit under a naked sword that was suspended by a hair in order to demonstrate to him that being a king was not the happy state Damocles had said it was (4th century BC)

What is the definition of damocles?

  • Damocles refers to a person who is threatened or in a precarious situation, typically with the imminent danger of a disaster or punishment.

What is the origin of the word damocles?

  • The word Damocles is derived from a story in Greek mythology. Damocles was a courtier in the court of Dionysius II of Syracuse. The story tells of Damocles being invited to sit on the king's throne, but above his head was a sword hanging by a single hair, symbolizing the constant danger and uncertainty faced by those in positions of power.

How is the word damocles used in a sentence?

  • The CEO of the company has a Damocles sword hanging over his head due to the financial troubles.
  • The impending deadline is like a Damocles sword, causing stress and anxiety.

What is the synonym of damocles?

  • The synonyms of Damocles include imminent threat, impending danger, peril, jeopardy, sword of Damocles.

What is the opposite of damocles?

  • The opposite of Damocles is safety, security, stability, predictability.

What are the related words to damocles?

  • Some related words to Damocles include danger, risk, uncertainty, vulnerability, instability.

What is a Damocles complex?

  • The Damocles complex refers to a psychological state of constant anxiety or fear experienced by individuals who feel threatened by potential dangers or problems, similar to the hovering sword of Damocles.

Who was Dionysius II of Syracuse?

  • Dionysius II of Syracuse was a tyrant who ruled Syracuse, a city in ancient Greece. He is known for his luxurious lifestyle and his courtier Damocles.

Is Damocles a common word in everyday usage?

  • Damocles is not a very common word in everyday usage. It is more commonly used in literary and figurative contexts to symbolize imminent danger or threat.

Is there a movie or book titled Damocles?

  • There is no widely known movie or book specifically titled Damocles. However, the concept of the sword of Damocles and its symbolism have been referenced in various works of literature and film.

How to pronounce damocles and what is the meaning of damocles

janus

noun

How to pronounce janus?

The word janus sounds like ja-nus
/'dʒeɪnəs/

What is the definition of janus?

noun(Roman mythology) the Roman god of doorways and passages; is depicted with two faces on opposite sides of his head

What is the definition of 'janus'?

  • Janus is a Roman god depicted with two faces, usually looking in opposite directions. He is the god of beginnings, transitions, doorways, and endings.

What is the origin of the word 'janus'?

  • The word 'janus' originates from Latin, deriving from the Latin word 'ianus', meaning 'archway' or 'door'. It is related to the concept of transitions and entrances/exits.

How is 'janus' pronounced?

  • 'janus' is pronounced JAY-nuhs.

What are some synonyms for 'janus'?

  • Some synonyms for 'janus' include 'two-faced', 'dual-faced', 'duplicitous', and 'ambivalent'.

What are some related words to 'janus'?

  • Some related words to 'janus' include 'transition', 'doorway', 'beginning', 'end', 'change', and 'duality'.

Who is Janus in Roman mythology?

  • Janus is a Roman god who has two faces, one looking to the future and the other to the past. He represents beginnings, endings, transitions, doorways, and gates. Janus is often depicted with a key in his right hand and a staff in his left hand.

What are the attributes or symbols associated with Janus?

  • Janus is associated with several attributes and symbols, including keys, gates, doors, staff, and double-faced coins. The key symbolizes his role as the god of beginnings and endings, while the gates and doors represent transitions. Janus is also often depicted holding a staff and coins with two faces, symbolizing duality and choices.

What is the significance of Janus in Roman religion?

  • Janus holds great significance in Roman religion as he presides over beginnings and transitions. He is the god of doorways and gates, and his worship was especially important during times of change and transition, such as the beginning of a new year or the start of a war. Janus was invoked before any other Roman god in rituals and ceremonies.

Are there any famous references to Janus in literature or art?

  • Yes, Janus is often referenced in literature and depicted in art. One famous literary work that mentions Janus is 'The Aeneid' by Virgil, where he is described as the god who looks both to the future and the past. Janus is also frequently depicted on Roman coins as well as sculptures and reliefs.

Is there a modern usage of the term 'janus'?

  • Yes, the term 'janus' is sometimes used in modern contexts to refer to someone who is two-faced or hypocritical. It can also be used to describe something that has two contrasting or contradictory aspects.

How to pronounce janus and what is the meaning of janus?

fought

What is the definition of 'fought'?

  • 'Fought' is the past tense and past participle of the verb 'fight'. It means to engage in a physical or verbal conflict or struggle with someone or something.

What is the origin of the word 'fought'?

  • The word 'fought' originated from the Middle English word 'foughten', which is derived from the Old English word 'feohtan'.

What are synonyms for 'fought'?

  • Some synonyms for 'fought' are 'battled', 'clashed', 'engaged', 'contended', and 'wrestled'.

What are antonyms for 'fought'?

  • Some antonyms for 'fought' are 'surrendered', 'yielded', 'reconciled', 'compromised', and 'agreed'.

What are some examples of sentences using 'fought'?

  • 1. He fought bravely in the war.
  • 2. The teams fought fiercely for the championship title.
  • 3. She fought against injustice.
  • 4. The siblings fought over the last piece of cake.

What is the past continuous tense of 'fought'?

  • The past continuous tense of 'fought' is 'was/were fighting'.

Is 'fought' a regular or irregular verb?

  • 'Fought' is an irregular verb because it does not follow the common pattern of verb conjugation.

Can 'fought' be used as a noun?

  • Yes, 'fought' can be used as a noun. In this case, it refers to a physical or verbal conflict or struggle.

In which contexts is 'fought' commonly used?

  • 'Fought' is commonly used in contexts related to battles, sports competitions, arguments, disagreements, wars, and personal conflicts.

What is the present participle of 'fought'?

  • The present participle of 'fought' is 'fighting'.

How to pronounce fought? What is the meaning of fought?

orgeat

What is the definition of orgeat?

  • Orgeat is a sweet syrup made from almonds, sugar, and rose or orange flower water. It is commonly used as a flavoring in cocktails and desserts.

What is another name for orgeat?

  • Another name for orgeat is almond syrup.

Is orgeat alcoholic?

  • No, orgeat is not alcoholic. It is a non-alcoholic syrup.

What are the ingredients of orgeat?

  • The main ingredients of orgeat are almonds, sugar, and rose or orange flower water.

What does orgeat taste like?

  • Orgeat has a sweet, nutty flavor with hints of almonds and floral notes from the rose or orange flower water.

What are the uses of orgeat?

  • Orgeat is commonly used as a flavoring in cocktails such as Mai Tai and in desserts like almond cakes and pastries.

Is orgeat vegan?

  • Orgeat can be vegan depending on the specific brand or recipe as some formulations may contain animal-derived ingredients. It is recommended to check the label or recipe to ensure it is suitable for a vegan diet.

Where is orgeat commonly used?

  • Orgeat is commonly used in various countries around the world, including France, Spain, and the United States.

Can orgeat be made at home?

  • Yes, orgeat can be made at home by blending soaked almonds with sugar and rose or orange flower water. There are many recipes available online for homemade orgeat.

Are there any alternatives to orgeat?

  • Yes, there are alternatives to orgeat such as almond extract or other nut-flavored syrups. However, these alternatives may not provide the exact same flavor profile as orgeat.

How do you pronounce 'orgeat' and what does it mean?