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Let $M$ be a complex- or real-analytic manifold, $\theta$ be a singular distribution and $\mathcal{I}$ a coherent ideal sheaf defined on $M$. We prove the existence of a local resolution of singularities of $\mathcal{I}$ that preserves the…

Complex Variables · Mathematics 2016-11-04 André Belotto da Silva

The Raychaudhuri equation has seen extensive use in general relativity, most notably in the development of various singularity theorems. In this rather technical article we shall generalize the Raychaudhuri equation in several ways. First…

General Relativity and Quantum Cosmology · Physics 2011-05-13 Gabriel Abreu , Matt Visser

We prove Grothendieck's Conjecture on Resolution of Singulari-ties for quasi-excellent schemes X of dimension three and of arbitrary characteristic. This applies in particular to X = SpecA, A a reduced complete Noetherian local ring of…

Algebraic Geometry · Mathematics 2019-01-09 Vincent Cossart , Olivier Piltant

In the classification of real singularities by Arnold et al. (1985), normal forms, as representatives of equivalence classes under right equivalence, are not always uniquely determined. We describe the complete structure of the equivalence…

Algebraic Geometry · Mathematics 2016-01-18 Magdaleen S. Marais , Andreas Steenpass

We prove local unique solvability of the wave equation for a large class of weakly singular, locally bounded space-time metrics in a suitable space of generalised functions.

Mathematical Physics · Physics 2009-02-11 James D. E. Grant , Eberhard Mayerhofer , Roland Steinbauer

We construct singular solutions of a complex elliptic equation of second order, having an isolated singularity of any order. In particular, we extend results obtained for the real partial differential equation in divergence form by…

Analysis of PDEs · Mathematics 2024-04-05 Jason Curran , Romina Gaburro , Clifford Nolan

An algorithmic proof of the General Neron Desingularization theorem is given for $2$-dimensional local rings and morphisms with small singular locus.

Commutative Algebra · Mathematics 2016-12-07 Gerhard Pfister , Dorin Popescu

We develop a local theory for the construction of singular spacetimes in all spacetime dimensions which become asymptotically self-similar as the singularity is approached. The techniques developed also allow us to construct and classify…

General Relativity and Quantum Cosmology · Physics 2018-02-27 Igor Rodnianski , Yakov Shlapentokh-Rothman

We answer positively a question of B. Teissier on existence of resolution of singularities inside an equivariant map of toric varieties.

Algebraic Geometry · Mathematics 2012-08-16 Jenia Tevelev

We study singular solutions to the fractional Laplace equation and, more generally, to nonlocal linear equations with measurable kernels. We establish B\^ocher type results that characterize the behavior of singular solutions near the…

Analysis of PDEs · Mathematics 2025-07-16 Minhyun Kim , Se-Chan Lee

We provide a new algebraic solution procedure for the global positioning problem in $n$ dimensions using $m$ satellites. We also give a geometric characterization of the situations in which the problem does not have a unique solution. This…

Signal Processing · Electrical Eng. & Systems 2023-10-16 Mireille Boutin , Gregor Kemper

We show that the universal abelian cover of the complement to a germ of a reducible divisor on a complex space $Y$ with isolated singularity is $(dimY-2)$-connected provided that the divisor has normal crossings outside of the singularity…

Algebraic Geometry · Mathematics 2007-05-23 Alexandru Dimca , Anatoly Libgober

A general method for the construction of solutions of the d'Alambertian and double d'Alambertian (harmonic and bi-harmonic) equations with local dependence of arbitrary functions upon two independent arguments is proposed. The connection…

High Energy Physics - Theory · Physics 2007-05-23 A. N. Leznov

We study necessary conditions and sufficient conditions for the existence of local-in-time solutions of the Cauchy problem for superlinear fractional parabolic equations. Our conditions are sharp and clarify the relationship between the…

Analysis of PDEs · Mathematics 2022-04-19 Yohei Fujishima , Kotaro Hisa , Kazuhiro Ishige , Robert Laister

This paper is concerned with the transient dynamics described by the solutions of the reaction-diffusion equations in which the reaction term consists of a combination of a superlinear power-law absorption and a time-independent point…

Analysis of PDEs · Mathematics 2015-11-10 Peter V. Gordon , Cyrill B. Muratov

For the completion B of a local geometric normal domain, V. Srinivas asked which subgroups of Cl B arise as the image of the map from Cl A to Cl B on class groups as A varies among normal geometric domains with B isomorphic to the…

Algebraic Geometry · Mathematics 2016-01-25 John Brevik , Scott Nollet

The goal of this paper is to establish Beilinson-Bernstein type localization theorems for quantizations of some conical symplectic resolutions. We prove the full localization theorems for finite and affine type A Nakajima quiver varieties.…

Representation Theory · Mathematics 2021-03-23 Ivan Losev

We prove nonuniqueness results for complete metrics with constant positive fractional curvature conformal to the round metric on $S^n \setminus S^k$, using bifurcation techniques. These are singular (positive) solutions to a non-local…

Differential Geometry · Mathematics 2024-06-13 Renato G. Bettiol , María del Mar González , Ali Maalaoui

We consider cosmological solutions of string and M-theory compactified to four dimensions by giving a general prescription to construct four-dimensional modular cosmologies with two commuting Killing vectors from vacuum solutions. By…

High Energy Physics - Theory · Physics 2009-10-31 A. Feinstein , M. A. Vazquez-Mozo

A common strategy to investigate the fate of gravitational singularities in asymptotically AdS spacetimes is to translate the question from the gravitational side to a dual field theory using the gauge/gravity correspondence and to do a…

High Energy Physics - Theory · Physics 2020-01-08 Norbert Bodendorfer , Fabio M. Mele , Johannes Münch
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