Hijazi - Hommage à Jean-Pierre Bourguignon 51:43 Samson Shatashvili - Integrability and Supersymmetry 58:34 Thibault Damour - 34 Gravitation relativiste et expérience 1:54:04 Xinyi Yuan, Hodge index theorem for adelic line bundles 1:14:52 Yiming Long, Multiple closed geodesics on spheres 41:...
https://www.youtube.com/watch?v=CPbHjFHaG-0 ICM2022 Amnon Neeman: Finite approximations as a tool for studying triangulated categories Abstract: A metric on a category assigns lengths to morphisms, with the triangle inequality holding. This notion goes back to a 1974 article by Lawvere. We...
Let G be an affine algebraic group over an algebraically closed field k of characteristic zero. In this article, we consider finite G-equivariant morphisms F:X→Y of irreducible affine G-varieties. First we determine under which conditions on Y the induced map F G:X//G→Y//G of ...
{infty}(X)} and d J(Y){deltain J_{infty}(Y)} , then the induced morphism [^(J(X)g)] [^(J(Y)d)]{widehat{J_{infty}(X)_{gamma}}to widehat{J_{infty}(Y)_{delta}}} is a closed embedding of codimension e. 展开 关键词: Space of arcs Formal neighborhood Ramification subsc...
If f is a morphism from probability X to Y, and Δ X/Y: X → XxYX, x → (x, x) is a closed immersion, then X is said to be separable on Y; if Y=SpecR, then X is said to be separable. The affine f: X → Y is called finite, if there is an affine open cover {Y ...
Inseparable morphisms of algebraic surfaces We prove that no regular vector field exists on an algebraic K3 surface defined over an algebraically closed field of finite characteristic.Bibliography: 19 titles. AN Rudakov,?afarevi?, I R - Mathematics of the USSR-Izvestiya 被引量: 148发表: 1976年...
Let \\pi : X -> S be a finite type morphism of noetherian schemes. A smoothformal embedding of X (over S) is a bijective closed immersion X -> \\frak{X},wh... A Yekutieli - 《Canadian Journal of Mathematics》 被引量: 87发表: 1995年 ...
Let G be a connected reductive algebraic group and let φ be a G-equivariant polynomial morphism between G-modules of the same dimension without G-stable lines. We show that if the morphism φ is finite then φ is an isomorphism. We give an example of a quasi-finite such morphism which ...
Mathlib.AlgebraicGeometry.Morphisms.RingHomProperties Mathlib.Analysis.InnerProductSpace.Dual Mathlib.FieldTheory.ChevalleyWarning Mathlib.RingTheory.Polynomial.Hermite.Gaussian Mathlib.MeasureTheory.Covering.VitaliFamily Mathlib.FieldTheory.IsAlgClosed.Classification Mathlib.LinearAlgebra.QuadraticForm.Basic Math...
Then e∈X. Moreover, the orbit of e under L (or R) consists of the evaluation morphisms at all points of G. Therefore both LGe and RGe separate points in A, so that LGe‾=RGe‾=X by the Urysohn lemma. A version of [17, Proposition 3.9] now implies that the point e is ...