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In a previous article the author extended the Witten deformation to singular spaces with cone-like singularities and to a class of Morse functions called admissible Morse functions. The method applies in particular to complex cones and…

Differential Geometry · Mathematics 2011-07-11 Ursula Ludwig

This paper is a survey of our work based on the stratified Morse theory of Goresky and MacPherson. First we discuss the Morse theory of Euclidean space stratified by an arrangement. This is used to show that the complement of a complex…

Algebraic Geometry · Mathematics 2007-05-23 Daniel C. Cohen , Peter Orlik

Discrete Morse theory, a cell complex-analog to smooth Morse theory, has been developed over the past few decades since its original formulation by Robin Forman in 1998. In particular, discrete gradient vector fields on simplicial complexes…

Combinatorics · Mathematics 2022-07-05 Ivan Contreras , Andrew R. Tawfeek

We develop a version of discrete Morse theory for finite regular CW complexes equipped with an auxiliary stratification. The key construction is the halo of a cell, which contains all those faces in the boundary that enter closed…

Algebraic Topology · Mathematics 2026-01-27 Vidit Nanda , Francesca Tombari

We investigate properties of the set of discrete Morse functions on a simplicial complex as defined by Forman. It is not difficult to see that the pairings of discrete Morse functions of a finite simplicial complex again form a simplicial…

Combinatorics · Mathematics 2007-05-23 Manoj K. Chari , Michael Joswig

Discrete Morse theory emerged as an essential tool for computational geometry and topology. Its core structures are discrete gradient fields, defined as acyclic matchings on a complex $C$, from which topological and geometrical informations…

Geometric Topology · Mathematics 2018-01-31 Joao Paixao , Joao Lagoas , Thomas Lewiner , Tiago Novello

1) We introduce random discrete Morse theory as a computational scheme to measure the complicatedness of a triangulation. The idea is to try to quantify the frequence of discrete Morse matchings with a certain number of critical cells. Our…

Computational Geometry · Computer Science 2014-04-21 Bruno Benedetti , Frank H. Lutz

Robin Forman's highly influential 2002 paper A User's Guide to Discrete Morse Theory presents an overview of the subject in a very readable manner. As a proof of concept, the author determines the topology (homotopy type) of the abstract…

Combinatorics · Mathematics 2025-01-20 Anupam Mondal , Pritam Chandra Pramanik

In this paper, we study Forman's discrete Morse theory in the context of weighted homology. We develop weighted versions of classical theorems in discrete Morse theory. A key difference in the weighted case is that simplicial collapses do…

Algebraic Topology · Mathematics 2020-02-05 Chengyuan Wu , Shiquan Ren , Jie Wu , Kelin Xia

In bounding the homology of a manifold, Forman's Discrete Morse theory recovers the full precision of classical Morse theory: Given a PL triangulation of a manifold that admits a Morse function with c_i critical points of index i, we show…

Differential Geometry · Mathematics 2014-07-10 Bruno Benedetti

Our objective is to develop a stratified Morse theory with tangential conditions. We define a continuous strata-wise smooth Morse function on an abstract stratified space by using control conditions and radiality assumptions on the gradient…

Geometric Topology · Mathematics 2010-11-25 Ursula Ludwig

The Discrete Morse Theory of Forman appeared to be useful for providing filtration-preserving reductions of complexes in the study of persistent homology. So far, the algorithms computing discrete Morse matchings have only been used for…

Computational Geometry · Computer Science 2015-03-13 Madjid Allili , Tomasz Kaczynski , Claudia Landi

The purpose of this work is to develop a version of Forman's discrete Morse theory for simplicial complexes, based on internal strong collapses. Classical discrete Morse theory can be viewed as a generalization of Whitehead's collapses,…

Algebraic Topology · Mathematics 2025-06-24 Ximena L. Fernández

This paper shows that discrete Morse-Bott theory can be developed as a natural extension of R. Forman's discrete Morse theory by improving the definition of the discrete Morse-Bott function introduced by S. Yaptieu. To this end, we…

Algebraic Topology · Mathematics 2026-02-16 Yuto Nishikawa , Tomoo Yokoyama

There are two rather distinct approaches to Morse theory nowadays: smooth and discrete. We propose to study a real valued function by assembling all associated sections in a topological category. From this point of view, Reeb functions on…

Algebraic Topology · Mathematics 2021-09-14 Paul Trygsland

In the case of smooth manifolds, we use Forman's discrete Morse theory to realize combinatorially any Thom-Smale complex coming from a smooth Morse function by a couple triangulation-discrete Morse function. As an application, we prove that…

Geometric Topology · Mathematics 2008-12-18 Etienne Gallais

We introduce a perfect discrete Morse function on the moduli space of a polygonal linkage. The ingredients of the construction are: (1) the cell structure on the moduli space, and (2) the discrete Morse theory approach, which allows to…

Algebraic Topology · Mathematics 2016-01-26 Gaiane Panina , Alena Zhukova

Forman introduced discrete Morse theory as a tool for studying CW complexes by essentially collapsing them onto smaller, simpler-to-understand complexes of critical cells in [Fo]. Chari reformulated discrete Morse theory for regular cell…

Combinatorics · Mathematics 2018-08-24 Patricia Hersh

This is the first of a series of papers that develop a systematic bridge between constructions in discrete mathematics and the corresponding continuous analogs. In this paper, we establish an equivalence between Forman's discrete Morse…

Combinatorics · Mathematics 2022-02-10 Jürgen Jost , Dong Zhang

We construct an equivariant version of discrete Morse theory for simplicial complexes endowed with group actions. The key ingredient is a 2-categorical criterion for making acyclic partial matchings on the quotient space compatible with an…

Group Theory · Mathematics 2022-03-02 Naya Yerolemou , Vidit Nanda
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