Zobrazeno 1 - 10
of 53
pro vyhledávání: '"De Concini, C."'
In this article, we start to recall the inversion formula for the convolution with the Box spline. The equivariant cohomology and the equivariant K-theory with respect to a compact torus G of various spaces associated to a linear action of G in a vec
Externí odkaz:
http://arxiv.org/abs/1012.1049
This is the first of two papers on partition functions and the index theory of transversally elliptic operators. In this paper we only discuss algebraic and combinatorial issues related to partition functions. The applications to index theory will ap
Externí odkaz:
http://arxiv.org/abs/0805.2907
Autor:
De Concini, C., Procesi, C.
We show a curious identity on root systems which gives the evaluation of the volume of the spherical simpleces cut by the cone generated by simple roots.
Externí odkaz:
http://arxiv.org/abs/math/0602279
Autor:
De Concini, C., Procesi, C.
In this paper we want to revisit results of Dahmen and Micchelli on box-splines which we reinterpret and make more precise. We compare these ideas with the work of Brion, Szenes, Vergne and others on polytopes and partition functions.
Comment: 6
Comment: 6
Externí odkaz:
http://arxiv.org/abs/math/0602019
Autor:
De Concini, C., Procesi, C.
We introduce toric arrangements, essentially finite families of codimension 1 subtori of a torus or of their cosets, as a periodic generalization of hyperplane arrangements, compute cohomology of the complement of such an arrangement and apply the th
Externí odkaz:
http://arxiv.org/abs/math/0505351
Autor:
De Concini, C., Procesi, C.
We use the results of AG/0406290 to discuss the counting formulas of network flow polytopes and magic squares, i.e. the formula for the corresponding Ehrhart polynomial in terms of residues. We also discuss a description of the big cells using the th
Externí odkaz:
http://arxiv.org/abs/math/0412130
Autor:
De Concini, C., Reichstein, Z.
Publikováno v:
Rendiconti di Matematica Accademia dei Lincei, s. 9, v. 15 (2004), 109--118.
Let F be a field and i < j be integers between 1 and n. A map of Grassmannians f : Gr(i, F^n) --> Gr(j, F^n) is called nesting, if l is contained in f(l) for every l in Gr(i, F^n). We show that there are no continuous nesting maps over C and no algeb
Externí odkaz:
http://arxiv.org/abs/math/0312039
These are the informal notes of two seminars held at the Universita` di Roma "La Sapienza", and at the Scuola Normale Superiore in Pisa in Spring and Autumn 1997. We discuss in detail the content of the parts of Givental's paper dealing with mirror s
Externí odkaz:
http://arxiv.org/abs/math/9805097
In this paper we analyze the structure of some subalgebras of quantized enveloping algebras corresponding to unipotent and solvable subgroups of a simple Lie group G. These algebras have the non--commutative structure of iterated algebras of twisted
Externí odkaz:
http://arxiv.org/abs/hep-th/9308138