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If K is a field (such as the complex numbers), a Puiseux series with coefficients in K is an expression of the form = = + / where is a positive integer and is an integer. In other words, Puiseux series differ from Laurent series in that they allow for fractional exponents of the indeterminate, as long as these fractional exponents have bounded denominator (here n).
definition remarks rational equivalence Z ~ rat Z' if there is a cycle V on X × P 1 flat over P 1, such that [V ∩ X × {0}] − [V ∩ X × {∞}] = [Z] − [Z' ]. the finest adequate equivalence relation (Lemma 3.2.2.1 in Yves André's book [2]) "∩" denotes intersection in the cycle-theoretic sense (i.e. with multiplicities) and [.] denotes the cycle associated to a subscheme. see also ...
To find the number of negative roots, change the signs of the coefficients of the terms with odd exponents, i.e., apply Descartes' rule of signs to the polynomial = + + This polynomial has two sign changes, as the sequence of signs is (−, +, +, −) , meaning that this second polynomial has two or zero positive roots; thus the original ...
Many authors do not name this test or give it a shorter name. [2] When testing if a series converges or diverges, this test is often checked first due to its ease of use. In the case of p-adic analysis the term test is a necessary and sufficient condition for convergence due to the non-Archimedean ultrametric triangle inequality.
Arithmetic geometry can be more generally defined as the study of schemes of finite type over the spectrum of the ring of integers. [1] Arithmetic geometry has also been defined as the application of the techniques of algebraic geometry to problems in number theory. [2] See also the glossary of number theory terms at Glossary of number theory
In elementary algebra, the binomial theorem (or binomial expansion) describes the algebraic expansion of powers of a binomial.According to the theorem, the power (+) expands into a polynomial with terms of the form , where the exponents and are nonnegative integers satisfying + = and the coefficient of each term is a specific positive integer ...