نتایج جستجو برای: thom class

تعداد نتایج: 400127  

Journal: :Journal of the Society for the Study of Architecture in Canada = Journal de la Société pour l'étude de l'architecture au Canada 2022

Ron Thom in the Limestone City: Megastructure, Urban Renewal, and Academy. An article from journal Journal of Society for Study Architecture Canada / Le de la Société pour l'étude l'architecture au (Volume 47, Number 1, 2022, pp. 2-101), on Érudit.

2008
Alain Lascoux Piotr Pragacz

Combining the “method of restriction equations” of Rimányi et al. with the techniques of symmetric functions, we establish the Schur function expansions of the Thom polynomials for the Morin singularities A3 : (C •, 0) → (C, 0) for any nonnegative integer k.

2008
MICHÈLE VERGNE

In the first part of this paper we prove the multiplicativ property of the relative Quillen Chern character. Then we obtain a Riemann-Roch formula between the relative Chern character of the Bott morphism and the relative Thom form.

Journal: :Duke Mathematical Journal 1979

1999
G. Papadopoulos

We propose a method to investigate the conservation of brane charges at the intersection of two or more branes using the Thom classes of their normal bundles. In particular we find a relation between the charge of the branes involved in the configuration and the charge of the defects on the branes due to the intersection. We also explore the applications of our method for various brane intersec...

2002
ILAN HIRSHBERG

Abstract. We consider a class of C-algebras associated to one parameter continuous tensor product systems of Hilbert modules, which can be viewed as continuous counterparts of Pimsner’s Toeplitz algebras. By exhibiting a homotopy of quasihomomorphisms, we prove that those algebras are K-contractible. One special case is closely related to the Rieffel-Wiener-Hopf extension of a crossed product b...

2007
René Thom Jacky CRESSON Aris DANIILIDIS Masahiro SHIOTA

More than half a century ago R. Thom asserted in an unpublished manuscript that, generically, vector fields on compact connected smooth manifolds without boundary can admit only trivial continuous first integrals. Though somehow unprecise for what concerns the interpretation of the word “generically”, this statement is ostensibly true and is nowadays commonly accepted. On the other hand, the (f...

2003
John Zweck

In the first part of this paper the theory of differential characters is developed completely from a de Rham Federer viewpoint. Characters are defined as equivalence classes of special currents, called sparks, which appear naturally in the theory of singular connections. As in de Rham Federer cohomology, there are many different spaces of currents which yield the character groups. The fundament...

2001
J F Sparks

We examine Kaluza-Klein branes in detail. Specifically, we show that codimension four submanifolds that are stationary under a semi-free circle action may be interpreted as branes or antibranes in the Kaluza-Klein reduced space that are magnetically charged under the Kaluza-Klein field strength. We derive the equation in cohomology that is satisfied by such a brane using an explicit constructio...

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