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The rich and varied ways that genetic material can be passed between species has motivated extensive research into the theory of phylogenetic networks. Features that align with biological processes, or with desirable mathematical…

种群与进化 · 定量生物学 2025-08-12 Andrew Francis

Expanding upon recent work, a new class of $A$-functions is introduced that can be viewed as an appropriate generalization of the class of regular $A$-functions, the class of structured $A$-functions, and the class of perfect $A$-functions.…

数论 · 数学 2022-03-01 Joseph Burnett , Alex Taylor

We review some semantic and syntactic complexity classes that were introduced to better understand the relationship between complexity classes P and NP. We also define several new complexity classes, some of which are associated with…

计算复杂性 · 计算机科学 2018-06-12 James L. Cox , Tayfun Pay

We present the MEoP problem that decides the existence of solutions to certain modular equations over prime numbers and show how this separates the complexity class NP from its subclass P

计算复杂性 · 计算机科学 2016-09-27 Marius Constantin Ionescu

Given two families $X$ and $Y$ of integral polytopes with nice combinatorial and algebraic properties, a natural way to generate new class of polytopes is to take the intersection $\mathcal{P}=\mathcal{P}_1\cap\mathcal{P}_2$, where…

组合数学 · 数学 2016-08-23 Takayuki Hibi , Nan Li , Teresa Xueshan Li , Lili Mu , Akiyoshi Tsuchiya

The graph G(p) associated with the p-groups of maximal class is a major tool in their classification. We introduce a subgraph of the graph G(p) called its frame. Its construction is based on the Lazard correspondence. We show that every…

群论 · 数学 2025-12-15 Bettina Eick , Patali Komma , Subhrajyoti Saha

Distributive skew lattices satisfying $x\wedge (y\vee z)\wedge x = (x\wedge y\wedge x) \vee (x\wedge z\wedge x)$ and its dual are studied, along with the larger class of linearly distributive skew lattices, whose totally preordered…

环与代数 · 数学 2013-06-25 Michael Kinyon , Jonathan Leech , Joao Pita Costa

We claim to resolve the P=?NP problem via a formal argument for P=NP.

计算复杂性 · 计算机科学 2007-05-23 Selmer Bringsjord , Joshua Taylor

The purpose of the present paper is to find the necessary and sufficient conditions for the subclasses of analytic functions associated with Pascal distribution to be in subclasses of spiral-like univalent functions and inclusion relations…

复变函数 · 数学 2020-07-22 G. Murugusundaramoorthy

The set of subsystems of a finite quantum system (with variables in Z(n)) together with logical connectives, is a distributive lattice. With regard to this lattice, the (where P(m) is the projector to) obeys a supermodularity inequality,…

量子物理 · 物理学 2015-06-23 A. Vourdas

Can we do a topological study of various classes of normal subgroups endowed with a hull-kernel-type topology? In this paper, we have provided an answer to this question. We have introduced as well a new class of normal subgroups called…

群论 · 数学 2024-08-21 Amartya Goswami

In this paper, we introduce a subclass of p-valent non-bazilavec functions of order. Some subordination relations and the inequality properties of p-valent functions are discussed. The results presented here generalize and improve some…

复变函数 · 数学 2019-02-27 A. A. Amourah , A. G. Alamoush , M. Darus

Skew lattices are non-commutative generalizations of lattices. The coset structure decomposition is an original approach to the study of these algebras describing the relation between its rectangular classes. In this paper we will look at…

环与代数 · 数学 2014-07-10 Joao Pita Costa

A paratopological group $G$ has a {\it suitable set} $S$. The latter means that $S$ is a discrete subspace of $G$, $S\cup \{e\}$ is closed, and the subgroup $\langle S\rangle$ of $G$ generated by $S$ is dense in $G$. Suitable sets in…

一般拓扑 · 数学 2020-12-25 Fucai Lin , Alex Ravsky , Tingting Shi

In this work, we present a method to generate probability distributions and classes of probability distributions, which broadens a process of probability distribution construction. In this method, distribution classes are built from…

A new class of distributions, called as normal power series (NPS), which contains the normal one as a particular case, is introduced in this paper. This new class which is obtained by compounding the normal and power series distributions,…

统计方法学 · 统计学 2015-10-27 Eisa Mahmoudi , Hamed Mahmoodian

We prove that the lattice of normal subgroups of ultraproducts of compact simple non-abelian groups is distributive. In the case of ultraproducts of finite simple groups or compact connected simple Lie groups of bounded rank the set of…

群论 · 数学 2014-02-26 Abel Stolz , Andreas Thom

We first study some families of maximal real subfields of cyclotomic fields with even class number, and then explore the implications of large plus class numbers of cyclotomic fields. We also discuss capitulation of the minus part and the…

数论 · 数学 2012-02-28 Franz Lemmermeyer

Classification theory of elementary classes deals with first order (elementary) classes of structures (i.e. fixing a set T of first order sentences, we investigate the class of models of T with the elementary submodel notion). It tries to…

逻辑 · 数学 2009-03-23 Saharon Shelah

We define a class of rational numbers including, as a particular case, the classical harmonic numbers. For one particular instance we apply it to the expansion into powers series of a special function, and also detail its relashionship with…

经典分析与常微分方程 · 数学 2015-12-14 Juan Pla