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  2. Polynomial decomposition - Wikipedia

    en.wikipedia.org/wiki/Polynomial_decomposition

    In mathematics, a polynomial decomposition expresses a polynomial f as the functional composition of polynomials g and h, where g and h have degree greater than 1; it is an algebraic functional decomposition. Algorithms are known for decomposing univariate polynomials in polynomial time.

  3. Degree of a polynomial - Wikipedia

    en.wikipedia.org/wiki/Degree_of_a_polynomial

    Therefore, let f(x) = g(x) = 2x + 1. Then, f(x)g(x) = 4x 2 + 4x + 1 = 1. Thus deg(f⋅g) = 0 which is not greater than the degrees of f and g (which each had degree 1). Since the norm function is not defined for the zero element of the ring, we consider the degree of the polynomial f(x) = 0 to also be undefined so that it follows the rules of a ...

  4. Polynomial - Wikipedia

    en.wikipedia.org/wiki/Polynomial

    f(x) = a 0 + a 1 x + a 2 x 2 + ⋯ + a n x n, where a n ≠ 0 and n ≥ 2 is a continuous non-linear curve. A non-constant polynomial function tends to infinity when the variable increases indefinitely (in absolute value ).

  5. Bell polynomials - Wikipedia

    en.wikipedia.org/wiki/Bell_polynomials

    For instance, in the above examples, the integer 3 can be partitioned into two parts as 2+1 only. Thus, there is only one monomial in B 3,2. However, the integer 6 can be partitioned into two parts as 5+1, 4+2, and 3+3. Thus, there are three monomials in B 6,2. Indeed, the subscripts of the variables in a monomial are the same as those given by ...

  6. NTRUEncrypt - Wikipedia

    en.wikipedia.org/wiki/NTRUEncrypt

    First, construct f such that = +, in which F is a small polynomial (i.e. coefficients {-1,0, 1}). By constructing f this way, f is invertible mod p . In fact f − 1 = 1 ( mod p ) {\displaystyle \ {\textbf {f}}^{-1}=1{\pmod {p}}} , which means that Bob does not have to actually calculate the inverse and that Bob does not have to conduct the ...

  7. Cubic function - Wikipedia

    en.wikipedia.org/wiki/Cubic_function

    The roots, stationary points, inflection point and concavity of a cubic polynomial x 36x 2 + 9x − 4 (solid black curve) and its first (dashed red) and second (dotted orange) derivatives. The critical points of a cubic function are its stationary points , that is the points where the slope of the function is zero. [ 2 ]

  8. Irreducible polynomial - Wikipedia

    en.wikipedia.org/wiki/Irreducible_polynomial

    In mathematics, an irreducible polynomial is, roughly speaking, a polynomial that cannot be factored into the product of two non-constant polynomials.The property of irreducibility depends on the nature of the coefficients that are accepted for the possible factors, that is, the ring to which the coefficients of the polynomial and its possible factors are supposed to belong.

  9. Stirling polynomials - Wikipedia

    en.wikipedia.org/wiki/Stirling_polynomials

    Yet another variant of the Stirling polynomials is considered in [3] (see also the subsection on Stirling convolution polynomials below). In particular, the article by I. Gessel and R. P. Stanley defines the modified Stirling polynomial sequences, ():= (+,) and ():= (,) where (,):= (,) are the unsigned Stirling numbers of the first kind, in terms of the two Stirling number triangles for non ...