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  2. Non-binary gender - Wikipedia

    en.wikipedia.org/wiki/Non-binary_gender

    Non-binary[a] and genderqueer are umbrella terms for gender identities that are outside the male/female gender binary. [2][3] Non-binary identities often fall under the transgender umbrella since non-binary people typically identify with a gender that is different from the sex assigned to them at birth, [3] although some non-binary people do ...

  3. Race (human categorization) - Wikipedia

    en.wikipedia.org/wiki/Race_(human_categorization)

    e. Race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. [1] The term came into common usage during the 16th century, when it was used to refer to groups of various kinds, including those characterized by close kinship relations. [2]

  4. Lesbian - Wikipedia

    en.wikipedia.org/wiki/Lesbian

    Researchers state that there is no standard definition of lesbian because "The term has been used to describe women who have sex with women, either exclusively or in addition to sex with men (i.e., behavior); women who self-identify as lesbian (i.e., identity); and women whose sexual preference is for women (i.e., desire or attraction)" ...

  5. List of presidents of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_Presidents_of_the...

    Since the office was established in 1789, 45 men have served in 46 presidencies. The first president, George Washington, won a unanimous vote of the Electoral College. [4] Grover Cleveland served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the ...

  6. Eigenvalues and eigenvectors - Wikipedia

    en.wikipedia.org/wiki/Eigenvalues_and_eigenvectors

    Eigenvalues and eigenvectors. In linear algebra, an eigenvector (/ ˈaɪɡən -/ EYE-gən-) or characteristic vector is a vector that has its direction unchanged by a given linear transformation. More precisely, an eigenvector, , of a linear transformation, , is scaled by a constant factor, , when the linear transformation is applied to it: .

  7. English language - Wikipedia

    en.wikipedia.org/wiki/English_language

    English is a West Germanic language in the Indo-European language family originating on the island of Great Britain. [4][5][6] Speakers of the language are called Anglophones owing to the namesake of the language, the Angles, one of the Germanic tribes that migrated to Britain in the early medieval period.

  8. Transistor - Wikipedia

    en.wikipedia.org/wiki/Transistor

    A transistor is a semiconductor device used to amplify or switch electrical signals and power. It is one of the basic building blocks of modern electronics. [1] It is composed of semiconductor material, usually with at least three terminals for connection to an electronic circuit.

  9. Time - Wikipedia

    en.wikipedia.org/wiki/Time

    Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. [1] [2] [3] It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the ...