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We construct a Springer-type resolution of singularities of the odd nilpotent cone of the orthosymplectic Lie superalgebras osp(m|2n).

Algebraic Geometry · Mathematics 2022-07-19 Ivan Motorin

We compare some algebras appeared in the recent attempts to prove resolution of singularities in positive characteristic. We also construct an algebra which encodes the same information and it is equivalent, up to integral closure, to the…

Algebraic Geometry · Mathematics 2012-08-10 Rocío Blanco , Santiago Encinas

A new proof of equivariant resolution of singularities under a finite group action in characteristic 0 is provided. We assume we know how to resolve singularities without group action. We first prove equivariant resolution of toroidal…

alg-geom · Mathematics 2008-02-03 Dan Abramovich , Jianhua Wang

This article is an exposition of an elementary constructive proof of canonical resolution of singularities in characteristic zero, presented in detail in Invent. Math. 128 (1997), 207-302. We define a new local invariant and get an…

alg-geom · Mathematics 2008-02-03 Edward Bierstone , Pierre D. Milman

We discuss Hironaka's theorem on resolution of singularities in charactetistic 0 as well as more recent progress, both on simplifying and improving Hironaka's method of proof and on new results and directions on families of varieties,…

Algebraic Geometry · Mathematics 2017-11-29 Dan Abramovich

We exhibit an explicit formula for the cardinality of solutions to a class of quadratic matrix equations over finite fields. We prove that the orbits of these solutions under the natural conjugation action of the general linear groups can…

Rings and Algebras · Mathematics 2024-03-01 Yin Chen , Xinxin Zhang

We use classical invariant theory to solve the biholomorphic equivalence problem for two families of plane curve singularities previously considered in the literature. Our calculations motivate an intriguing conjecture that proposes a way…

Complex Variables · Mathematics 2011-10-17 Alexander Isaev

We discuss some "folklore" results on categorical crepant resolutions for varieties with quotient singularities.

Algebraic Geometry · Mathematics 2014-06-20 Roland Abuaf

We give an overview of invariants of algebraic singularities over perfect fields. We then show how they lead to a synthetic proof of embedded resolution of singularities of 2-dimensional schemes.

Algebraic Geometry · Mathematics 2011-10-04 Angélica Benito , Orlando E. Villamayor

We present a theorem of resolution of singularities for real analytic constrained differential systems $A(x)\dot{x} = F(x)$ defined on a 2-manifold with corners having impasse set $\{x; \det A(x) = 0\}$. This result can be seen as a…

Dynamical Systems · Mathematics 2020-12-02 Otavio Henrique Perez , Paulo Ricardo da Silva

In this note we show non-degeneracy and uniqueness results for solutions of Toda systems associated to general simple Lie algebras with multiple singular sources on bounded domains. The argument is based on spectral properties of Cartan…

Analysis of PDEs · Mathematics 2023-02-27 Daniele Bartolucci , Aleks Jevnikar , Jiaming Jin , Chang-Shou Lin , Senli Liu

The dual complex associated to a resolution of singularities generalizes the notion of a resolution graph of a surface singularity to any dimension. We show that homotopy type of the dual complex is an invariant of an isolated singularity.

Algebraic Geometry · Mathematics 2015-06-26 D. A. Stepanov

We study solutions to conformally invariant equations with isolated singularties.

Analysis of PDEs · Mathematics 2007-05-23 YanYan Li

We introduce the notion of a conical symplectic variety, and show that any symplectic resolution of such a variety is isomorphic to the Springer resolution of a nilpotent orbit in a semisimple Lie algebra, composed with a linear projection.

Algebraic Geometry · Mathematics 2014-04-07 Michel Brion , Baohua Fu

The main result of this article is an application of the theory of invariant convex cones of Lie algebras to the study of unitary representations of Lie supergroups. It also includes an exposition of recent results of the second author on…

Representation Theory · Mathematics 2010-12-14 Karl-Hermann Neeb , Hadi Salmasian

We relate finite generation of cones, monoids, and ideals in increasing chains (the local situation) to equivariant finite generation of the corresponding limit objects (the global situation). For cones and monoids there is no analog of…

Combinatorics · Mathematics 2022-04-26 Thomas Kahle , Dinh Van Le , Tim Römer

We give some new congruences for singular real algebraic curves which generalize Fiedler's congruence for nonsingular curves.

Algebraic Geometry · Mathematics 2015-10-28 Patrick M. Gilmer

Let $X$ be an algebraic variety with Gorenstein singularities. We define the notion of a wonderful resolution of singularities of $X$ by analogy with the theory of wonderful compactifications of semi-simple linear algebraic groups. We prove…

Algebraic Geometry · Mathematics 2013-09-04 Roland Abuaf

We show that the derived category of any singularity over a field of characteristic 0 can be embedded fully and faithfully into a smooth triangulated category which has a semiorthogonal decomposition with components equivalent to derived…

Algebraic Geometry · Mathematics 2018-09-10 Alexander Kuznetsov , Valery A. Lunts

Let k be an algebraically closed field of characteristic zero. We show that the centre of a homologically homogeneous, finitely generated k-algebra has rational singularities. In particular if a finitely generated normal commutative…

Algebraic Geometry · Mathematics 2007-05-23 J. T. Stafford , M. Van den Bergh
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