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  2. Lattice multiplication - Wikipedia

    en.wikipedia.org/wiki/Lattice_multiplication

    A grid is drawn up, and each cell is split diagonally. The two multiplicands of the product to be calculated are written along the top and right side of the lattice, respectively, with one digit per column across the top for the first multiplicand (the number written left to right), and one digit per row down the right side for the second multiplicand (the number written top-down).

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Some students studying math may develop an apprehension or fear about their performance in the subject. This is known as math anxiety or math phobia, and is considered the most prominent of the disorders impacting academic performance. Math anxiety can develop due to various factors such as parental and teacher attitudes, social stereotypes ...

  4. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    [2] [3] Thus, in the expression 1 + 2 × 3, the multiplication is performed before addition, and the expression has the value 1 + (2 × 3) = 7, and not (1 + 2) × 3 = 9. When exponents were introduced in the 16th and 17th centuries, they were given precedence over both addition and multiplication and placed as a superscript to the right of ...

  5. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    Natural numbers are studied in different areas of math. Number theory looks at things like how numbers divide evenly (divisibility), or how prime numbers are spread out. Combinatorics studies counting and arranging numbered objects, such as partitions and enumerations.

  6. Long line (topology) - Wikipedia

    en.wikipedia.org/wiki/Long_line_(topology)

    The closed long ray = [,) consists of an uncountable number of copies of [,) 'pasted together' end-to-end. Compare this with the fact that for any countable ordinal, pasting together copies of [,) gives a space which is still homeomorphic (and order-isomorphic) to [,). (And if we tried to glue together more than copies of [,), the resulting space would no longer be locally homeomorphic to .

  7. Death of a Salesman - Wikipedia

    en.wikipedia.org/wiki/Death_of_a_Salesman

    Death of a Salesman is a 1949 stage play written by the American playwright Arthur Miller.The play premiered on Broadway in February 1949, running for 742 performances. It is a two-act tragedy set in late 1940s Brooklyn told through a montage of memories, dreams, and arguments of the protagonist Willy Loman, a travelling salesman who is despondent with his life and appears to be slipping into ...