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Orbifold elliptic genus and elliptic genus of singular varieties are introduced and relation between them is studied. Elliptic genus of singular varieties is given in terms of a resolution of singularities and extends the elliptic genus of…

Algebraic Geometry · Mathematics 2007-05-23 Lev Borisov , Anatoly Libgober

We define a GL-variety to be a (typically infinite dimensional) algebraic variety equipped with an action of the infinite general linear group under which the coordinate ring forms a polynomial representation. Such varieties have been used…

Algebraic Geometry · Mathematics 2022-09-07 Arthur Bik , Jan Draisma , Rob H. Eggermont , Andrew Snowden

Let $G$ be a Lie group acting on a vector space $V$. Given a set of $G$-invariants, one can ask the question : does this set of invariants characterize the group $G$ ? We recall here some known results, ask questions and state some…

Representation Theory · Mathematics 2007-07-06 Mustapha Raïs

We construct examples of p-adic L-functions over universal deformation spaces for GL(2). We formulate a conjecture predicting that the natural parameter spaces for p-adic L-functions are not the usual eigenvarieties (parametrising…

Number Theory · Mathematics 2023-09-15 David Loeffler

Studied is a generalization of Zagier's q-series identity. We introduce a generating function of L-functions at non-positive integers, which is regarded as a half-differential of the Andrews--Gordon q-series. When q is a root of unity, the…

Number Theory · Mathematics 2007-05-23 Kazuhiro Hikami

A brief survey is given of the classical Langlands correspondence between n-dimensional representations of Galois groups of local and global fields of dimension 1 and irreducible representations of the groups GL(n). A generalization of the…

Number Theory · Mathematics 2015-06-16 A. N. Parshin

We construct the deformation functor associated with a pair of morphisms of differential graded Lie algebras, and use it to study infinitesimal deformations of holomorphic maps of compact complex manifolds. In particular, using L-infinity…

Algebraic Geometry · Mathematics 2008-04-03 Donatella Iacono

Originally motivated by algebraic invariant theory, we present an algorithm to enumerate integer vectors modulo the action of a permutation group. This problem generalizes the generation of unlabeled graph up to an isomorphism. In this…

Combinatorics · Mathematics 2012-11-28 Nicolas Borie

In this thesis new objects to the existing set of invariants of Lie algebras are added. These invariant characteristics are capable of describing the nilpotent parametric continuum of Lie algebras. The properties of these invariants, in…

Mathematical Physics · Physics 2015-06-23 Jiří Hrivnák

We are studing Galois actions on fundamental groups. Using towers of coverings we construct measures on the products of finite copies of Z_p. Using these measures we can calculate coefficients of Galois representations. In the simplest case…

Number Theory · Mathematics 2014-03-11 Zdzislaw Wojtkowiak

Let $\Gamma$ be a finite group acting linearly on a vector space $V$. We compute the Lie algebra cohomology of the Lie algebra of $\Gamma$-invariant formal vector fields on $V$. We use this computation to define characteristic classes for…

Representation Theory · Mathematics 2007-05-23 Ilya Shapiro , Xiang Tang

This paper announces results on the behavior of some important algebraic and topological invariants --- Euler characteristic, arithmetic genus, and their intersection homology analogues; the signature, etc. --- and their associated…

Algebraic Geometry · Mathematics 2009-09-25 Sylvain E. Cappell , Julius L. Shaneson

Let $K/F$ be a quadratic extension of $p$-adic fields, and $n$ a positive integer. A smooth irreducible representation of the group $GL(n,K)$ is said to be distinguished, if it admits on its space a nonzero $GL(n,F)$-invariant linear form.…

Representation Theory · Mathematics 2009-12-08 Nadir Matringe

We give a new heuristic for all of the main terms in the quotient of products of L-functions averaged over a family. These conjectures generalize the recent conjectures for mean values of L-functions. Comparison is made to the analogous…

Number Theory · Mathematics 2007-12-06 Brian Conrey , David W. Farmer , Martin R. Zirnbauer

We formulate for function fields an analog of Serre's conjecture on the modularity of 2-dimensional irreducible mod l representations of the absolute Galois group of Q: our analog is not restricted to 2-dimensional represntations. While the…

Number Theory · Mathematics 2007-05-23 Gebhard Boeckle , Chandrashekhar Khare

We study genus 2 function fields with elliptic subfields of degree 2. The locus $\L_2$ of these fields is a 2-dimensional subvariety of the moduli space $\mathcal M_2$ of genus 2 fields. An equation for $\L_2$ is already in the work of…

Algebraic Geometry · Mathematics 2012-09-17 Tony Shaska , Helmut Voelklein

We make explicit certain results around the Galois correspondence in the context of definable automorphism groups, and point out the relation to some recent papers dealing with the Galois theory of algebraic differential equations when the…

Logic · Mathematics 2016-07-20 Omar Leon Sanchez , Anand Pillay

Invariance and equivariance to geometrical transformations have proven to be very useful inductive biases when training (convolutional) neural network models, especially in the low-data regime. Much work has focused on the case where the…

Machine Learning · Computer Science 2024-07-11 Mircea Mironenco , Patrick Forré

The article generalizes an observation of Zagier and Gangl to show that the image of the spectral Eisenstein series on a general congruence subgroup of $\text{SL}_2(\mathbb{Z})$, under the Eichler-Shimura isomorphism, is defined over a…

Number Theory · Mathematics 2025-09-03 Soumyadip Sahu

We classify Galois objects for the dual of a group algebra of a finite group over an arbitrary field.

Quantum Algebra · Mathematics 2010-06-22 Cesar Galindo , Manuel Medina