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The purpose of this expository note is to describe duality and trace in a symmetric monoidal category, along with important properties (including naturality and functoriality), and to give as many examples as possible. Among other things,…

范畴论 · 数学 2013-10-25 Kate Ponto , Michael Shulman

We show that the product of any number of sequentially pseudocompact topological spaces is still sequentially pseudocompact. The definition of sequential pseudocompactness can be given in (at least) two ways: we show their equivalence. Some…

一般拓扑 · 数学 2016-04-19 Paolo Lipparini

Given an ordered structure, we study a natural way to extend the order to preorders on type spaces. For definably complete, linearly ordered structures, we give a characterisation of the preorder on the space of 1-types. We apply these…

We prove that any closed map between metrizable spaces can be extended to a closed map between completely metrizable spaces with the same extensional dimension.

一般拓扑 · 数学 2007-05-23 H. Murat Tuncali , E. D. Tymchatin , Vesko Valov

This survey contains a selection of topics unified by the concept of positive semi-definiteness (of matrices or kernels), reflecting natural constraints imposed on discrete data (graphs or networks) or continuous objects (probability or…

经典分析与常微分方程 · 数学 2019-11-13 Alexander Belton , Dominique Guillot , Apoorva Khare , Mihai Putinar

We survey the logical structure of constructive set theories and point towards directions for future research. Moreover, we analyse the consequences of being extensible for the logical structure of a given constructive set theory. We…

逻辑 · 数学 2022-12-07 Rosalie Iemhoff , Robert Passmann

The present work pursues the aim to draw attention to unique possibilities of the skew-symmetric differential forms. At present the theory of skew-symmetric exterior differential forms that possess invariant properties has been developed.…

综合数学 · 数学 2007-05-23 L. I. Petrova

Recently, a new fractional derivative called the conformable fractional derivative is given on based basic limit definition derivative in [4]. Then, the fractional versions of chain rules, exponential functions, Gronwalls inequality,…

经典分析与常微分方程 · 数学 2015-04-09 Ahmet Gökdoğan , Emrah Ünal , Ercan Çelik

For every natural number $m$, the existentially closed models of the theory of fields with $m$ commuting derivations can be given a first-order geometric characterization in several ways. In particular, the theory of these differential…

逻辑 · 数学 2013-01-04 David Pierce

We study a type of connection forms, given by Chen integrals, over pathspaces by placing such forms within a category-theoretic framework of principal bundles and connections. We introduce a notion of 'decorated' principal bundles, develop…

范畴论 · 数学 2014-01-07 Saikat Chatterjee , Amitabha Lahiri , Ambar N. Sengupta

This paper explores relational syllogistic logics, a family of logical systems related to reasoning about relations in extensions of the classical syllogistic. These are all decidable logical systems. We prove completeness theorems and…

逻辑 · 数学 2023-06-22 Alex Kruckman , Lawrence S. Moss

These course note first provide an introduction to secondary characteristic classes and differential cohomology. They continue with a presentation of a stable homotopy theoretic approach to the theory of differential extensions of…

代数拓扑 · 数学 2013-08-20 Ulrich Bunke

We introduce a generalization of sequential compactness using barriers on $\omega$ extending naturally the notion introduced in [W. Kubi\'{s} and P. Szeptycki, On a topological Ramsey theorem, \emph{Canad. Math. Bull.}, 66 (2023),…

We show that in the category of preordered sets, there is a natural notion of pretorsion theory, in which the partially ordered sets are the torsion-free objects and the sets endowed with an equivalence relation are the torsion objects.…

范畴论 · 数学 2019-02-19 Alberto Facchini , Carmelo Finocchiaro

We study the kinetics of random sequential adsorption of a mixture of particles with continuous distribution of sizes for different deposition rules. It appears in the long time limit the resulting system can be described using the fractal…

凝聚态物理 · 物理学 2008-02-03 M. K. Hassan

We provide a formal introduction into the classic theorems of general topology and its axiomatic foundations in set theory. Starting from ZFC, the exposition in this first part includes relation and order theory as well as a construction of…

历史与综述 · 数学 2013-06-26 Felix Nagel

We develop parallel transport on path spaces from a differential geometric approach, whose integral version connects with the category theoretic approach. In the framework of 2-connections, our approach leads to further development of…

数学物理 · 物理学 2015-05-19 Saikat Chatterjee , Amitabha Lahiri , Ambar N. Sengupta

3 pages presentation of the theory of discrete conformal parameterization using circle patterns or its linearized theory. Principal results and ideas.

数学物理 · 物理学 2008-02-12 Christian Mercat

This article presents a survey of some recent results in the theory of spatial graphs. In particular, we highlight results related to intrinsic knotting and linking and results about symmetries of spatial graphs. In both cases we consider…

几何拓扑 · 数学 2018-08-14 Erica Flapan , Thomas Mattman , Blake Mellor , Ramin Naimi , Ryo Nikkuni

We develop the K-theory of sets with an action of a pointed monoid (or monoid scheme), analogous to the $K$-theory of modules over a ring (or scheme). In order to form localization sequences, we construct the quotient category of a nice…

K理论与同调 · 数学 2021-09-08 Ian Coley , Charles Weibel