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For a set-valued map, we characterize, in terms of its (unconvexified or convexified) graphical derivatives near the point of interest, positively homogeneous maps that are generalized derivatives in the sense of [20]. This result…

Optimization and Control · Mathematics 2012-11-20 C. H. Jeffrey Pang

We generalize Cartan's logarithmic derivative of a smooth map from a manifold into a Lie group $G$ to smooth maps into a homogeneous space $M=G/H$, and determine the global monodromy obstruction to reconstructing such maps from…

Differential Geometry · Mathematics 2022-04-12 Anthony D. Blaom

This is a survey paper on derived symplectic geometry, that will appear as a chapter contribution to the book "New Spaces for Mathematics and Physics", edited by Mathieu Anel and Gabriel Catren. Our goal is to explain how derived stacks can…

Symplectic Geometry · Mathematics 2021-04-08 Damien Calaque

We study when the derived intersection of two smooth subvarieties of a smooth variety is formal. As a consequence we obtain a derived base change theorem for non-transversal intersections. We also obtain applications to the study of the…

Algebraic Geometry · Mathematics 2014-12-18 Dima Arinkin , Andrei Caldararu , Marton Hablicsek

We construct a new compactification of the moduli space of maps from pointed nonsingular projective stable curves to a nonsingular projective variety with prescribed ramification indices at the points. It is shown to be a proper…

Algebraic Geometry · Mathematics 2011-06-01 Bumsig Kim , Andrew Kresch , Yong-Geun Oh

The endoscopic classification via the stable trace formula comparison provides certain character relations between irreducible cuspidal automorphic representations of classical groups and their global Arthur parameters, which are certain…

Number Theory · Mathematics 2019-11-20 Dihua Jiang , Lei Zhang

We introduce a formalism for derived moduli functors on differential graded associative algebras, which leads to non-commutative enhancements of derived moduli stacks and naturally gives rise to structures such as Hall algebras. Descent…

Algebraic Geometry · Mathematics 2020-08-27 J. P. Pridham

We construct p-adic period map using derived de Rham cohomology of Illusie and give a simple proof of Fontaine's C_{dR} conjecture.

Algebraic Geometry · Mathematics 2012-05-22 Alexander Beilinson

A global representation is a compatible collection of representations of the outer automorphism groups of the groups belonging to some collection of finite groups $\mathscr{U}$. Global representations assemble into an abelian category…

Representation Theory · Mathematics 2026-05-20 Miguel Barrero , Tobias Barthel , Luca Pol , Neil Strickland , Jordan Williamson

Mumford--Tate domains parametrize polarized Hodge structures with fixed Mumford--Tate group and play a central role in the geometry of period maps. Their degenerations are governed by nilpotent orbits and limiting mixed Hodge structures,…

Algebraic Geometry · Mathematics 2025-12-03 Mohammad Reza Rahmati

The aim of these notes is to acquaint the reader with important objects in complex algebraic geometry: K3 surfaces and their higher-dimensional analogs, hyperk\"ahler manifolds. These manifolds are interesting from several points of view:…

Algebraic Geometry · Mathematics 2020-11-18 Olivier Debarre

This paper revisits the notion of classical orthogonal polynomials from a broader functional-analytic point of view. It is intended neither as a survey of known results nor as a review of the literature, but rather as a conceptual…

Classical Analysis and ODEs · Mathematics 2026-05-28 K. Castillo

We begin by introducing the concept of a Hodge structure and give some of its basic properties, including the Hodge and Lefschetz decompositions. We then define the period map, which relates families of Kahler manifolds to the families of…

Algebraic Geometry · Mathematics 2015-09-17 Sara Angela Filippini , Helge Ruddat , Alan Thompson

A graphical model encodes conditional independence relations via the Markov properties. For an undirected graph these conditional independence relations can be represented by a simple polytope known as the graph associahedron, which can be…

Statistics Theory · Mathematics 2017-12-08 Fatemeh Mohammadi , Caroline Uhler , Charles Wang , Josephine Yu

We define derived versions of $F$-zips and associate a derived $F$-zip to any proper, smooth morphism of schemes in positive characteristic. We analyze the stack of derived $F$-zips and certain substacks. We make a connection to the…

Algebraic Geometry · Mathematics 2026-05-27 Can Yaylali

We classify the possible closures of leaves of the isoperiodic foliation (sometimes called absolute period foliation) defined on the Hodge bundle, i.e. the moduli space of abelian differentials over genus $g\geq 2$ smooth curves, and prove…

Algebraic Geometry · Mathematics 2025-08-04 Gabriel Calsamiglia , Bertrand Deroin , Stefano Francaviglia

We provide an algorithm for computing an effective basis of homology of elliptic surfaces over the complex projective line on which integration of periods can be carried out. This allows the heuristic recovery of several algebraic…

Algebraic Geometry · Mathematics 2025-05-07 Eric Pichon-Pharabod

Let $\md^b(A)$ be the derived category of a finite dimensional basic algebra $A$ with finite global dimension. We construct the Lie algebra arising from the 2-periodic version $\mk_2(\mp(A))$ of $\mk^b(\mp(A))$ in term of constructible…

Quantum Algebra · Mathematics 2010-01-27 Jie Xiao , Fan Xu , Guanglian Zhang

We define and initiate the study of analytic de Rham stacks of relative Fargues-Fontaine curves. To this end, we develop a theory of analytic de Rham stacks with sufficiently strong descent and approximation properties. Specializing to the…

We introduce an "extended locus of Hodge classes" that also takes into account integral classes that become Hodge classes "in the limit". More precisely, given a polarized variation of integral Hodge structure of weight zero on a…

Algebraic Geometry · Mathematics 2014-01-29 Christian Schnell