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Related papers: On the tropical Lefschetz-Hopf trace formula

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The Lefschetz number and fixed point index can be thought of as two different descriptions of the same invariant. The Lefschetz number is algebraic and defined using homology. The index is defined more directly from the topology and is a…

Algebraic Topology · Mathematics 2015-04-27 Kate Ponto

In a series of lectures Selberg introduced a trace formula on the space of hybrid Maass-modular forms of an irreducible uniform lattice in $\PSL_2(\bbR)^n$. In this paper we derive the analogous formula for a non-uniform lattice and use it…

Number Theory · Mathematics 2012-12-07 Dubi Kelmer

We construct a symmetric spectrum representing the G-equivariant K-theory of C*-algebras for a compact group or a proper groupoid G. Our spectrum is functorial for equivariant *-homomorphisms. We use this to establish the additivity of the…

K-Theory and Homology · Mathematics 2011-04-19 Ivo Dell'Ambrogio , Heath Emerson , Tamaz Kandelaki , Ralf Meyer

The configuration of a matroid $M$ is the abstract lattice of cyclic flats (flats that are unions of circuits) where we record the size and rank of each cyclic flat, but not the set. One can compute the Tutte polynomial of $M$, and stronger…

Combinatorics · Mathematics 2025-12-18 Joseph E. Bonin , Anna de Mier

We prove a version of the Lefschetz fixed point theorem for multivalued maps $F:X\multimap X$ in which $X$ is a finite $T_0$ space.

Dynamical Systems · Mathematics 2020-05-29 Jonathan Ariel Barmak , Marian Mrozek , Thomas Wanner

A general Lefschetz formula for the geodesic action on locally symmetric spaces is proven.

Differential Geometry · Mathematics 2007-05-23 Anton Deitmar

In this article, we investigate the alternating sum of the l-adic cohomology of the Lubin-Tate tower by the Lefschetz trace formula. Our method gives slightly stronger results than in the preceding work of Strauch.

Representation Theory · Mathematics 2011-06-02 Yoichi Mieda

We express the Frobenius-Hecke traces on the compactly supported cohomology of a Shimura variety of abelian type in terms of elliptic parts of stable Arthur-Selberg trace formulas for the endoscopic groups. This confirms predictions of…

Number Theory · Mathematics 2021-10-12 Mark Kisin , Sug Woo Shin , Yihang Zhu

In this note, we derive explicitly the local relative trace formula for the symmetric space F*\SL(2,F) at the level of Lie algebras, where F is a p-adic field of residue characteristic greater than two and F* is the set of invertible…

Representation Theory · Mathematics 2008-12-01 Jonathan Sparling

In the present paper, we build up trace formulas for both the linear Hamiltonian systems and Sturm-Liouville systems. The formula connects the monodromy matrix of a symmetric periodic orbit with the infinite sum of eigenvalues of the…

Mathematical Physics · Physics 2015-06-17 Xijun Hu , Yuwei Ou , Penghui Wang

In this paper, we investigate the trace set of a Fuchsian lattice. There are two results of this paper: the first is that for a non-uniform lattice, we prove Scmutz's conjecture: the trace set of a Fuchsian lattice exhibits linear growth if…

Group Theory · Mathematics 2025-10-21 Yanlong Hao

Based on the notion of vectors and linear subspaces for a matroid, we develop a theory of flats and hyperplane arrangements for T-matroids, where T is a tract. This leads to several cryptomorphic descriptions of T-matroids: in terms of its…

Combinatorics · Mathematics 2026-03-11 Jannis Koulman , Oliver Lorscheid

Delta-matroids are "type B" generalizations of matroids in the same way that maximal orthogonal Grassmannians are generalizations of Grassmannians. A delta-matroid analogue of the Tutte polynomial of a matroid is the interlace polynomial.…

Combinatorics · Mathematics 2024-09-19 Christopher Eur , Matt Larson , Hunter Spink

While not obvious from its initial motivation in linear algebra, there are many context where iterated traces can be defined. In this paper we prove a very general theorem about iterated 2-categorical traces. We show that many…

Algebraic Topology · Mathematics 2022-08-10 Jonathan A. Campbell , Kate Ponto

In the spirit of Arthur's trace formula, we establish a general trace formula for symmetric spaces associated with the variety of involutions of a finite $D$-module where $D$ is a division algebra central over a number field $F$. Such a…

Number Theory · Mathematics 2026-02-09 Pierre-Henri Chaudouard , Huajie Li

In a first time we present a version of the Poincar{\'e}-Lefschetz theorem for certain cellular cosheaves on a particular subdivision of a CW-complex K. To that end we construct a cellular sheaf on K whose cohomology with compact support is…

Algebraic Topology · Mathematics 2023-08-21 Jules Chenal

Let $F$ be a transversely oriented foliation of codimension 1 on a closed manifold $M$, and let $\phi=\{\phi^t\}$ be a foliated flow on $(M,F)$. Assume the closed orbits of $\phi$ are simple and its preserved leaves are transversely simple.…

Geometric Topology · Mathematics 2024-02-14 Jesús A. Álvarez López , Yuri A. Kordyukov , Eric Leichtnam

Assuming a certain "purity" conjecture, we derive a formula for the (complex) cohomology groups of the affine Springer fiber corresponding to any unramified regular semi-simple element. We use this calculation to present a complex analog of…

Representation Theory · Mathematics 2007-05-23 Mark Goresky , Robert Kottwitz , Robert MacPherson

The objective of this paper is to develop a general algebraic theory of supertropical matrix algebra, extending [11]. Our main results are as follows: * The tropical determinant (i.e., permanent) is multiplicative when all the determinants…

Commutative Algebra · Mathematics 2009-12-07 Zur Izhakian , Louis Rowen

This paper is motivated by Deninger's programme. First we prove, using Alvarez Lopez-Kordyukov results, an Atiyah-Bott-Lefschetz trace formula for the cohomology groups associated to a ramified leafwise flat line bundle on a riemannian…

Number Theory · Mathematics 2013-07-16 Eric Leichtnam