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  2. Men of Mathematics - Wikipedia

    en.wikipedia.org/wiki/Men_of_Mathematics

    In July 1935, Bell signed a contract with Simon and Schuster, for a book to be titled The Lives of Mathematicians. [1] He delivered the manuscript at the beginning of November 1935 as promised, but was unhappy when the publishers made him cut about a third of it (125,000 words), and, in order to tie in with their book Men of Art (by Thomas Craven), gave it the title Men of Mathematics which he ...

  3. Eric Temple Bell - Wikipedia

    en.wikipedia.org/wiki/Eric_Temple_Bell

    Eric Temple Bell (7 February 1883 – 21 December 1960) was a Scottish-born mathematician, educator and science fiction writer who lived in the United States for most of his life. [1] He published non-fiction using his given name and fiction as John Taine .

  4. Bell polynomials - Wikipedia

    en.wikipedia.org/wiki/Bell_polynomials

    Here, the fact that both x 1 and x 2 have exponent 1 indicates that there is only one such block in a given partition. The coefficient of the monomial indicates how many such partitions there are. Here, there are 3 partitions of a set with 3 elements into 2 blocks, where in each partition the elements are divided into two blocks of sizes 1 and 2.

  5. Bell series - Wikipedia

    en.wikipedia.org/wiki/Bell_series

    In mathematics, the Bell series is a formal power series used to study properties of arithmetical functions. Bell series were introduced and developed by Eric Temple Bell . Given an arithmetic function f {\displaystyle f} and a prime p {\displaystyle p} , define the formal power series f p ( x ) {\displaystyle f_{p}(x)} , called the Bell series ...

  6. Bell number - Wikipedia

    en.wikipedia.org/wiki/Bell_number

    The permutations that avoid the generalized patterns 12-3, 32-1, 3-21, 1-32, 3-12, 21-3, and 23-1 are also counted by the Bell numbers. [4] The permutations in which every 321 pattern (without restriction on consecutive values) can be extended to a 3241 pattern are also counted by the Bell numbers. [ 5 ]

  7. Bell X-2 - Wikipedia

    en.wikipedia.org/wiki/Bell_X-2

    The Bell X-2 (nicknamed "Starbuster" [1]) was an X-plane research aircraft built to investigate flight characteristics in the Mach 2–3 range. The X-2 was a rocket-powered, swept-wing research aircraft developed jointly in 1945 by Bell Aircraft Corporation, the United States Army Air Forces and the National Advisory Committee for Aeronautics (NACA) to explore aerodynamic problems of ...

  8. Welded wire mesh - Wikipedia

    en.wikipedia.org/wiki/Welded_wire_mesh

    This type of mesh is a square grid of uniformly placed wires, welded at all intersections, and meeting the requirements of ASTM A185 and A497 or other standards. [1] The sizes are specified by combining the spacing, in inches or mm, and the wire cross section area in hundredths of square inches or mm2.

  9. God Created the Integers - Wikipedia

    en.wikipedia.org/wiki/God_Created_the_Integers

    God Created the Integers: The Mathematical Breakthroughs That Changed History is a 2005 anthology, edited by Stephen Hawking, of "excerpts from thirty-one of the most important works in the history of mathematics." [1] Each chapter of the work focuses on a different mathematician and begins with a biographical overview. Within each chapter ...