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In this paper, we study the computation of optimal discrete Morse functions on stratifolds. In particular, we present an algorithm that efficiently computes such functions for a broad class of them. Moreover, we characterize the conditions…

Algebraic Topology · Mathematics 2026-03-03 Jesus Liceaga-Martinez , Jesús Rodríguez-Viorato , José Carlos Gómez-Larrañaga

We study perfect discrete Morse functions on closed oriented n-dimensional manifolds. We show how to compose such functions on connected sums of closed oriented manifolds and how to decompose on connected sums of closed oriented surfaces.

Algebraic Topology · Mathematics 2016-12-15 Neza Mramor Kosta , Mehmetcik Pamuk , Hanife Varli

Let $M$ be a compact oriented simply-connected manifold of dimension at least 8. Assume $M$ is equipped with a torsion-free semi-free circle action with isolated fixed points. We prove $M$ has a perfect invariant Morse-Smale function. The…

Geometric Topology · Mathematics 2007-05-23 Mikhail Kogan

In this paper, we show that if a closed, connected, oriented 3-manifold M = M1#M2 admits a perfect discrete Morse function, then one can decompose this function as perfect discrete Morse functions on M_1 and M_2. We also give an explicit…

Algebraic Topology · Mathematics 2018-04-04 Neza Mramor Kosta , Mehmetcik Pamuk , Hanife Varli

In this article we see that the value takes the Smarandache Function when it is applied to a perfect number.

General Mathematics · Mathematics 2007-05-23 Sebastian Martin Ruiz

We show that an appropriate generalization of the oriented area function is a perfect Morse function on the space of three-dimensional configurations of an equilateral polygonal linkage with odd number of edges. Therefore cyclic equilateral…

Geometric Topology · Mathematics 2016-11-15 Gaiane Panina

Completely multiplicative functions whose sum is zero ($CMO$).The paper deals with $CMO$, meaning completely multiplicative ($CM$) functions $f$ such that $f(1)=1$ and $\sum\limits\_1^\infty f(n)=0$. $CM$ means $f(ab)=f(a)f(b)$ for all…

Number Theory · Mathematics 2015-07-20 Jean-Pierre Kahane , Eric Saias

In this paper, the concordance of Morse functions is defined, and a necessary and sufficient condition for given two Morse functions to be concordant is presented and is compared with the cobordism criterion. Cobordism of Morse functions on…

Geometric Topology · Mathematics 2023-12-19 Ryosuke Ota

This paper was motivated by work of Arnold where he explains how to count "snakes", i.e. Morse functions on the real axis with prescribed behavior at infinity. This leads immediately to a count of excellent Morse functions on the circle,…

Geometric Topology · Mathematics 2014-01-14 Liviu I. Nicolaescu

$CMO$ functions are completely multiplicative functions $f$ for which $\sum_{n=1}^\infty f(n)$ $=0$. These functions were first introduced and studied by Kahane and Sa\"{i}as [5]. The main purpose of this paper is to generalise such…

Number Theory · Mathematics 2021-08-27 Ammar Ali Neamah

Morse matchings capture the essential structural information of discrete Morse functions. We show that computing optimal Morse matchings is NP-hard and give an integer programming formulation for the problem. Then we present polyhedral…

Combinatorics · Mathematics 2007-05-23 Michael Joswig , Marc E. Pfetsch

Let $ f:(0,\infty)\rightarrow \Bbb{R} $ be a completely monotonic function. In this paper, we present some properties of this functions and several new classes of completely monotonic functions. We also give some special functions such that…

Classical Analysis and ODEs · Mathematics 2025-05-30 Mostafa Najafi , Ali Morassaei

The purpose of the present article is to obtain the condition that the function defined by infinite composition of entire functions becomes an entire function. Moreover, as an example of such functions, we study a function called Poincare…

Complex Variables · Mathematics 2010-09-16 Shota Kojima

We relate previously defined quantum characteristic classes to Morse theoretic aspects of the Hofer length functional on $\ls$. As an application we prove a theorem which can be interpreted as stating that this functional behaves…

Symplectic Geometry · Mathematics 2010-07-21 Yasha Savelyev

The goal of this paper is to classify pairs of Morse functions in general position modulo the action of different groups.In particular, we obtain the classification of generic pairs of Morse functions, with or without target…

Classical Analysis and ODEs · Mathematics 2017-03-21 Olivier Thom

We give a new proof of a classical theorem on approximation of continuous functions on totally real sets

Complex Variables · Mathematics 2008-05-23 Bo Berndtsson

In the 1950s Morse defined the analogue of Morse functions for topological manifolds. In many instances, when mathematicians are using techniques on topological manifolds that appear to be Morse-theoretic in nature, there is a topological…

Geometric Topology · Mathematics 2026-03-11 Ingrid Irmer

Consider a definable complete d-minimal expansion $(F, <, +, \cdot, 0, 1, \dots,)$ of an oredered field $F$. Let $X$ be a definably compact definably normal definable $C^r$ manifold and $2 \le r <\infty$. We prove that the set of definable…

Logic · Mathematics 2024-08-28 Masato Fujita , Tomohiro Kawakami

We introduce the notion of a Morse sequence, which provides a simple and effective approach to discrete Morse theory. A Morse sequence is a sequence composed solely of two elementary operations, that is, expansions (the inverse of a…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Gilles Bertrand

We construct random Morse functions on surfaces by random walk and compute related distributions. We study the space of Morse functions through these random variables. We consider subspaces characterized by the surfaces with boundary…

Probability · Mathematics 2025-08-28 Boldizsar Kalmar
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