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Related papers: Reidemeister's theorem using transversality

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We prove the algebraicity of smooth $CR$-mappings between algebraic Cauchy--Riemann manifolds. A generalization of separate algebraicity principle is established.

alg-geom · Mathematics 2008-02-03 R. A. Sharipov , A. B. Sukhov

This paper develops a discrete theory of real Riemann surfaces based on quadrilateral cellular decompositions (quad-graphs) and a linear discretization of the Cauchy-Riemann equations. We construct a discrete analogue of an antiholomorphic…

Complex Variables · Mathematics 2026-01-01 Johanna Düntsch , Felix Günther

We extend the equivalence of the Salem type for the Riemann hypothesis by application of Titchmarsh's theorem. Other equivalences to the Riemann hypothesis and notes on related Fourier integrals are provided.

Number Theory · Mathematics 2025-09-03 Alexander E. Patkowski

In this note we give a characterization of taut Riemannian foliations using the transverse divergence. This result turns out to be a convenient tool in the case of some standard examples. Furthermore, we show that a classical tautness…

Differential Geometry · Mathematics 2016-02-10 Vladimir Slesar

It is proven an analogue of The Theorem of Moser according to an iterative normalization procedure depending on Generalized Fischer Decompositions.

Complex Variables · Mathematics 2021-05-26 Valentin Burcea

We derive general structure and rigidity theorems for submetries $f: M \to X$, where $M$ is a Riemannian manifold with sectional curvature $\sec M \ge 1$. When applied to a non-trivial Riemannian submersion, it follows that $diam X \leq…

Differential Geometry · Mathematics 2014-04-16 Xiaoyang Chen , Karsten Grove

We prove conformal versions of the local decomposition theorems of de Rham and Hiepko of a Riemannian manifold as a Riemannian or a warped product of Riemannian manifolds. Namely, we give necessary and sufficient conditions for a Riemannian…

Differential Geometry · Mathematics 2007-05-23 Ruy Tojeiro

An algorithmic proof of the General N\'eron Desingularization theorem and its uniform version is given for morphisms with big smooth locus. This generalizes the results for the one-dimensional case.

Commutative Algebra · Mathematics 2017-07-27 Zunaira Kosar , Gerhard Pfister , Dorin Popescu

A description of solutions of some integral equations has been obtained. A two-radii theorem is obtained as well.

Classical Analysis and ODEs · Mathematics 2013-09-17 Olga D. Trofimenko

In this paper we give a new proof of Riemann's well known mapping theorem. The suggested method permits to prove an analog of that theorem for the three dimensional case.

Complex Variables · Mathematics 2011-01-05 Ashot Vagharshakyan

We give a direct and elementary proof of the theorem on formal functions by studying the behaviour of the Godement resolution of a sheaf of modules under completion.

Algebraic Geometry · Mathematics 2007-11-29 Fernado Sancho , Pedro Sancho

We prove the equivalence between the smoothing effect for a Schr\"odinger operator and the decay of the associate spectral projectors. We give two applications to the Schr\"odinger operator in dimension one.

Analysis of PDEs · Mathematics 2009-12-25 Laurent Thomann

In this paper we state and prove ad hoc "Separation Theorems" of the so-called Smooth Commutative Algebra, the Commutative Algebra of \(\mathcal{C}^{\infty}-\)rings. These results are formally similar to the ones we find in (ordinary)…

Commutative Algebra · Mathematics 2021-10-27 Jean Cerqueira Berni , Hugo Luiz Mariano

In this paper, we prove that any perfect complex of $D^{\infty}$-modules may be reconstructed from its holomorphic solution complex provided that we keep track of the natural topology of this last complex. This is to be compared with the…

Algebraic Geometry · Mathematics 2007-05-23 F. Prosmans , J. -P. Schneiders

In this short paper, we use Tannakian reconstruction techniques to prove a result that explains how to reconstruct the stacky approach to de Rham cohomology from the classical theory algebraic de Rham cohomology via an application of the…

Algebraic Geometry · Mathematics 2022-02-16 Shubhodip Mondal

This article gives a complex analysis lighting on the problem which consists in restoring a bordered connected riemaniann surface from its boundary and its Dirichlet-Neumann operator. The three aspects of this problem, unicity,…

Complex Variables · Mathematics 2007-05-23 Gennadi Henkin , Vincent Michel

In this paper we give a survey of elliptic theory for operators associated with diffeomorphisms of smooth manifolds. Such operators appear naturally in analysis, geometry and mathematical physics. We survey classical results as well as…

K-Theory and Homology · Mathematics 2015-11-06 Anton Savin , Boris Sternin

In this paper we prove using quite elementary methods, with a combinatorial nature, two general results related to Marstrand's projection theorem in a quite general formulation over metric spaces under a suitable transversality condition…

Metric Geometry · Mathematics 2024-10-07 Carlos Gustavo Moreira , Sergio Augusto Romaña Ibarra , Waliston Luiz Silva

In this paper we equate the analytic and the intersection Reidemeister torsions on spaces with a specific type of wedge singularities, which arise by turning the disc cross-sections in the tubular neighborhood of an embedded submanifold of…

Differential Geometry · Mathematics 2024-09-02 Luiz Hartmann , Boris Vertman

We give examples on the use of the Stone-Weierstrass theorem in inverse problems. We show uniqueness in the linearized Calder\'on problem on holomorphically separable K\"ahler manifolds, and in the Calder\'on problem for nonlinear equations…

Complex Variables · Mathematics 2024-04-02 Tony Liimatainen , Mikko Salo