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  2. Pontecorvo–Maki–Nakagawa–Sakata matrix - Wikipedia

    en.wikipedia.org/wiki/Pontecorvo–Maki...

    e. In particle physics, the Pontecorvo–Maki–Nakagawa–Sakata matrix (PMNS matrix), Maki–Nakagawa–Sakata matrix (MNS matrix), lepton mixing matrix, or neutrino mixing matrix is a unitary [a] mixing matrix which contains information on the mismatch of quantum states of neutrinos when they propagate freely and when they take part in weak ...

  3. Matrix (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Matrix_(mathematics)

    Matrix (mathematics) An m × n matrix: the m rows are horizontal and the n columns are vertical. Each element of a matrix is often denoted by a variable with two subscripts. For example, a2,1 represents the element at the second row and first column of the matrix. In mathematics, a matrix (pl.: matrices) is a rectangular array or table of ...

  4. Mathematics education in the United States - Wikipedia

    en.wikipedia.org/wiki/Mathematics_education_in...

    e. Mathematics education in the United States varies considerably from one state to the next, and even within a single state. However, with the adoption of the Common Core Standards in most states and the District of Columbia beginning in 2010, mathematics content across the country has moved into closer agreement for each grade level.

  5. History of African-American education - Wikipedia

    en.wikipedia.org/wiki/History_of_African...

    t. e. The History of African-American education deals with the public and private schools at all levels used by African Americans in the United States and for the related policies and debates. Black schools, also referred to as "Negro schools" and "colored schools", were racially segregated schools in the United States that originated in the ...

  6. Mathematical beauty - Wikipedia

    en.wikipedia.org/wiki/Mathematical_beauty

    Mathematical beauty is the aesthetic pleasure derived from the abstractness, purity, simplicity, depth or orderliness of mathematics. Mathematicians may express this pleasure by describing mathematics (or, at least, some aspect of mathematics) as beautiful or describe mathematics as an art form, (a position taken by G. H. Hardy [1]) or, at a ...

  7. Patricia Hill Collins - Wikipedia

    en.wikipedia.org/wiki/Patricia_Hill_Collins

    Intersectionality, matrix of domination, controlling images. Patricia Hill Collins (born May 1, 1948) is an American academic specializing in race, class, and gender. She is a distinguished university professor of sociology emerita at the University of Maryland, College Park. [1] She is also the former head of the Department of African-American ...