منابع مشابه
Homeomorphism and Diffeomorphism Groups of Non-compact Manifolds with the Whitney Topology
For a topological manifold M let H(M) be the group of homeomorphisms of M endowed with the Whitney topology and Hc(M) the subgroup of H(M) consisting of homeomorphisms with compact support. The identity component H0(M) of H(M) is an open normal subgroup in Hc(M) and it induces the factorization Hc(M) ≈ H0(M)×Mc(M) for the mapping class group Mc(M) = Hc(M)/H0(M). For each connected non-compact s...
متن کاملTranslated Whitney and r-Whitney Numbers: A Combinatorial Approach
Using a combinatorial approach, we introduce the translated Whitney numbers. This seems to be more natural than to write a product of anarithmetical progression in terms of a power variable and conversely. We also extend our ideas to translated r-Whitney numbers of both kinds and to translated Whitney-Lah numbers.
متن کاملNormality, Projective Normality and Egz Theorem
In this note, we prove that the projective normality of (P(V )/G,L), the celebrated theorem of Erdös-Ginzburg-Ziv and normality of an affine semigroup are all equivalent, where V is a finite dimensional representation of a finite cyclic group G over C and L is the descent of the line bundle O(1)⊗|G|.
متن کاملVolume, Density and Whitney Conditions
This paper studies the variation of the volume of a subanalytic family of sets. More precisely we are interested in the variation of the density. We prove that the density is continuous along a stratum of a Whitney subanalytic stratification and locally lipschitzian when the stratification satisfies the Kuo-Verdier condition. This problem had been studied by Comte in [C].
متن کاملWhitney algebras and Letterplace superalgebras
I’ll give an outline of the theory of Whitney algebras of a matroid, with the notions of geometric product and the excahnge relations, I’ll give the letterplace superalgebra coding of these algebras, and I’ll show how this coding allows to get the exchange relations directly from the superstraightening laws. I’ll not speak about the Lax Hopf algebra structure of Whitney algebras. All this is pa...
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ژورنال
عنوان ژورنال: Topology and its Applications
سال: 1993
ISSN: 0166-8641
DOI: 10.1016/0166-8641(93)90090-z