semi-Fredholm operator

A semi-Fredholm operator is a bounded operator between Banach spaces that has a finite dimensional kernel or cokernel, and closed range.There are two semigroups of semi-Fredholm operators:upper semi-Fredholm operators (those which have finite dimensional kernels),and lower semi-Fredholm operators (those which have finite dimensional cokernels).A semi-Fredholm operator that is both upper and lower is Fredholm.If an operator is homotopic through (a norm continuous path of) semi-Fredholm operators to a Fredholm operator, then it is Fredholm.

单词	SemiFredholmOperator
释义	semi-Fredholm operator A semi-Fredholm operator is a bounded operator between Banach spaces that has a finite dimensional kernel or cokernel, and closed range.There are two semigroups of semi-Fredholm operators:upper semi-Fredholm operators (those which have finite dimensional kernels),and lower semi-Fredholm operators (those which have finite dimensional cokernels).A semi-Fredholm operator that is both upper and lower is Fredholm.If an operator is homotopic through (a norm continuous path of) semi-Fredholm operators to a Fredholm operator, then it is Fredholm.
随便看	FaceOfAConvexSet face of a convex set FaceOfAConvexSetAlternativeDefinitionOf face of a convex set, alternative definition of FactorEmbeddable factor embeddable Factorial factorial FactorialBase factorial base FactorialBaseRepresentationOfFractions factorial base representation of fractions FactorialModuloPrimePowers factorial modulo prime powers FactorialPrime factorial prime FactoringAllonePolynomialsUsingTheGroupingMethod factoring all-one polynomials using the grouping method FactoringASumOrDifferenceOfTwoCubes factoring a sum or difference of two cubes Factorion factorion FactorizationCriterion factorization criterion FactorizationOfPrimitivePolynomial