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We present in this work a new and simple proof of the false centre theorem.

Metric Geometry · Mathematics 2021-10-28 Luis Montejano , Efren Morales-Amaya

We prove a new cross theorem for separately holomorphic functions.

Complex Variables · Mathematics 2010-09-10 Marek Jarnicki , Peter Pflug

In this note we make use of some properties of vector fields on a manifold to give an alternate proof to [3] for the equivalence between connections and parallel transport on vector bundles over manifolds. Out of the proof will emerge a new…

Differential Geometry · Mathematics 2011-02-23 Florin Dumitrescu

We construct a nerve functor parametrized by a choice of quantale, exhibiting both the Vietoris-Rips complex and the magnitude nerve as instances of this nerve for different choices of monoidal structure on $\mathbb{R}$. Furthermore, the…

Algebraic Topology · Mathematics 2020-03-10 Simon Cho

We prove several extensions of the Erdos-Fuchs theorem.

Number Theory · Mathematics 2016-08-31 Li-Xia Dai , Hao Pan

We prove a general version of the homological perturbation lemma which works in the presence of curvature, and without the restriction to strong deformation retracts, building on work of Markl. A key observation is that the notion of strong…

Algebraic Topology · Mathematics 2020-02-05 Matthew Hogancamp

We prove an analogue of the fixed-point theorem for the case of definably amenable groups.

Logic · Mathematics 2017-11-15 Juan Felipe Carmona , Kevin Dávila , Alf Onshuus , Rafael Zamora

In this paper the homology stability for symplectic groups over a ring with finite stable rank is established. First we develop a `nerve theorem' on the homotopy type of a poset in terms of a cover by subposets, where the cover is itself…

K-Theory and Homology · Mathematics 2012-01-06 B. Mirzaii , W. van der Kallen

A new continuity for set-valued functions is introduced, and an existence theorem is proved for such continuous set-valued functions.

Numerical Analysis · Mathematics 2009-01-13 Alexandre Goldsztejn

In this note, we present a simple non-directed graph proof of Sharkovsky's theorem which is different from the one given in [2].

Dynamical Systems · Mathematics 2007-05-23 Bau-Sen Du

In this paper, we extend a result of Lafont and M{\'e}tayer and prove that the polygraphic homology of a small category, defined in terms of polygraphic resolutions in the category $\omega$Cat of strict $\omega$-categories, is naturally…

Algebraic Topology · Mathematics 2021-02-24 Léonard Guetta

We study a variant of algebraic K-theory and prove that it is stable and preserves module structures.

Category Theory · Mathematics 2016-05-27 Sanath Devalapurkar

We present a new and useful congruence identity satisfied by m-permutable varieties.

General Mathematics · Mathematics 2007-05-23 Paolo Lipparini

We prove a vanishing theorem for the twisted de Rham cohomology of a compact manifold.

Differential Geometry · Mathematics 2011-02-03 Ana Cristina Ferreira

In the present paper we obtain a new homological version of the implicit function theorem and some versions of the Darboux theorem. Such results are proved for continuous maps on topological manifolds. As a consequence, some versions of…

Algebraic Topology · Mathematics 2007-06-28 Carlos Biasi , Carlos Gutierrez , Edivaldo L. dos Santos

Approximations to the Kruskal-Katona theorem are stated and proven. These approximations are weaker than the theorem, but much easier to work with numerically.

Combinatorics · Mathematics 2010-10-13 Andrew Frohmader

A theorem of McCord of 1966 and Quillen's Theorem A of 1973 provide sufficient conditions for a map between two posets to be a homotopy equivalence at the level of complexes. We give an alternative elementary proof of this result and we…

Combinatorics · Mathematics 2010-05-05 Jonathan Ariel Barmak

The formulation of the alternative theory of neutrino oscillations is presented. Also the application of that theory to a system of neutrinos produced by a source is formulated and some basic formulae are derived.

High Energy Physics - Phenomenology · Physics 2007-05-23 Viliam Pazma , Julius Vanko

In this note we obtain a new convergence result for the Adomian decomposition method.

General Mathematics · Mathematics 2019-06-18 Hicham Zoubeir

In this work we develop a cellular equivariant homology functor and apply it to prove an equivariant Euler-Poincare formula and an equivariant Lefschetz theorem.

Algebraic Topology · Mathematics 2007-05-23 Boris Chorny