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2. Hadamard product (matrices) - Wikipedia

   en.wikipedia.org/wiki/Hadamard_product_(matrices)

   The Hadamard product operates on identically shaped matrices and produces a third matrix of the same dimensions. In mathematics, the Hadamard product (also known as the element-wise product, entrywise product [1]: ch. 5 or Schur product [2]) is a binary operation that takes in two matrices of the same dimensions and returns a matrix of the multiplied corresponding elements.

3. Left and right (algebra) - Wikipedia

   en.wikipedia.org/wiki/Left_and_right_(algebra)

   The distinction is not purely syntactical because one gets two different associativity rules (the lowest row in the table) which link multiplication in a module with multiplication in a ring. A bimodule is simultaneously a left and right module, with two different scalar multiplication operations, obeying an associativity condition on them. [vague]

4. Piecewise function - Wikipedia

   en.wikipedia.org/wiki/Piecewise_function

   In applied mathematical analysis, "piecewise-regular" functions have been found to be consistent with many models of the human visual system, where images are perceived at a first stage as consisting of smooth regions separated by edges (as in a cartoon); [9] a cartoon-like function is a C 2 function, smooth except for the existence of ...

5. List of mathematical functions - Wikipedia

   en.wikipedia.org/wiki/List_of_mathematical_functions

   Algebraic functions are functions that can be expressed as the solution of a polynomial equation with integer coefficients. Polynomials: Can be generated solely by addition, multiplication, and raising to the power of a positive integer. Constant function: polynomial of degree zero, graph is a horizontal straight line

6. Piecewise property - Wikipedia

   en.wikipedia.org/wiki/Piecewise_property

   A function property holds piecewise for a function, if the function can be piecewise-defined in a way that the property holds for every subdomain. Examples of functions with such piecewise properties are: Piecewise constant function, also known as a step function; Piecewise linear function; Piecewise continuous function

7. Piecewise - Wikipedia

   en.wikipedia.org/wiki/Piecewise-defined_function

   In applied mathematical analysis, "piecewise-regular" functions have been found to be consistent with many models of the human visual system, where images are perceived at a first stage as consisting of smooth regions separated by edges (as in a cartoon); [6] a cartoon-like function is a C 2 function, smooth except for the existence of ...