Dictionary:Quasi-polynomials

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{{#category_index:Q|quasi-polynomials}} Whereas polynomials are one-sided (i.e., involve increasing powers), quasi-polynomials are two-sided (i.e., involve both positive and negative powers). Thus (a0+a1x+a2x2+...) is a polynomial and (...+a–2x–2+a–1x–1+a0+a1x+a–2x–2+...) is a quasi-polynomial.