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formal power

См. также в других словарях:

  • Formal power series — In mathematics, formal power series are devices that make it possible to employ much of the analytical machinery of power series in settings that do not have natural notions of convergence. They are also useful, especially in combinatorics, for… …   Wikipedia

  • Formal group — In mathematics, a formal group law is (roughly speaking) a formal power series behaving as if it were the product of a Lie group. They were first defined in 1946 by S. Bochner. The term formal group sometimes means the same as formal group law,… …   Wikipedia

  • Formal calculation — In mathematical logic, a formal calculation is sometimes defined as a calculation which is systematic, but without a rigorous justification . This means that we are manipulating the symbols in an expression using a generic substitution, without… …   Wikipedia

  • Formal — The term formal has a number of uses, including:General*relating to formality *opposite of informalocial* Formal occasion ** Formal attire worn on such occasions ** Formals are particular meals at some British universities ** In Australian or… …   Wikipedia

  • Power series — In mathematics, a power series (in one variable) is an infinite series of the form:f(x) = sum {n=0}^infty a n left( x c ight)^n = a 0 + a 1 (x c)^1 + a 2 (x c)^2 + a 3 (x c)^3 + cdotswhere an represents the coefficient of the n th term, c is a… …   Wikipedia

  • Formal derivative — In mathematics, the formal derivative is an operation on elements of a polynomial ring which mimics the form of the derivative from calculus. Though they appear similar, the algebraic advantage of a formal derivative is that it does not rely on… …   Wikipedia

  • Formal moduli — In mathematics, formal moduli are an aspect of the theory of moduli spaces (of algebraic varieties or vector bundles, for example), closely linked to deformation theory and formal geometry. Roughly speaking, deformation theory can provide the… …   Wikipedia

  • Formal — Form al (f[^o]rm al), a. [L. formalis: cf. F. formel.] 1. Belonging to the form, shape, frame, external appearance, or organization of a thing. [1913 Webster] 2. Belonging to the constitution of a thing, as distinguished from the matter composing …   The Collaborative International Dictionary of English

  • Formal cause — Formal Form al (f[^o]rm al), a. [L. formalis: cf. F. formel.] 1. Belonging to the form, shape, frame, external appearance, or organization of a thing. [1913 Webster] 2. Belonging to the constitution of a thing, as distinguished from the matter… …   The Collaborative International Dictionary of English

  • formal — for‧mal [ˈfɔːml ǁ ˈfɔːr ] adjective done or given officially and publicly: • The companies said they expect to sign a formal agreement before year s end. • No formal announcement has yet been made. • The British authorities have decided to… …   Financial and business terms

  • power of attorney — power of attorney: an instrument containing an authorization for one to act as the agent of the principal that terminates esp. upon revocation by the principal or death of the principal or agent – called also letter of attorney; du·ra·ble power… …   Law dictionary

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