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We extend the theory of Thom spectra and the associated obstruction theory for orientations in order to support the construction of the string orientation of tmf, the spectrum of topological modular forms. We also develop the analogous…

Algebraic Topology · Mathematics 2017-05-17 Matthew Ando , Andrew J. Blumberg , David Gepner , Michael J. Hopkins , Charles Rezk

We develop a generalization of the theory of Thom spectra using the language of infinity categories. This treatment exposes the conceptual underpinnings of the Thom spectrum functor: we use a new model of parametrized spectra, and our…

Algebraic Topology · Mathematics 2014-03-19 Matthew Ando , Andrew J. Blumberg , David Gepner , Michael J. Hopkins , Charles Rezk

We prove a Thom isomorphism theorem for differential forms in the setting of transverse Lie algebra actions on foliated manifolds and foliated vector bundles.

Differential Geometry · Mathematics 2023-11-27 Yi Lin , Reyer Sjamaar

We explain how to define an embedding of a tame stack over a noetherian ring into a certain generalization of a weighted projective stack using a notion of ample vector bundle on the stack. As applications we construct algebraic moduli…

Algebraic Geometry · Mathematics 2024-07-03 Daniel Bragg , Martin Olsson , Rachel Webb

We develop a theory of R-module Thom spectra for a commutative symmetric ring spectrum R and we analyze their multiplicative properties. As an interesting source of examples, we show that R-algebra Thom spectra associated to the special…

Algebraic Topology · Mathematics 2020-01-10 Samik Basu , Steffen Sagave , Christian Schlichtkrull

This paper is based on my talk at ICM on recent progress in a number of classical problems of linear algebra and representation theory, based on new approach, originated from geometry of stable bundles and geometric invariant theory.

Representation Theory · Mathematics 2007-05-23 Alexander Klyachko

We show that a triangulated motivic category admits categorical Thom isomorphisms for vector bundles with an additional structure if and only if the generalized motivic cohomology theory represented by the tensor unit object admits Thom…

Algebraic Topology · Mathematics 2021-08-25 Alexey Ananyevskiy

We consider the moduli space of rank two, odd degree, semi-stable Real vector bundles over a real curve, calculating the singular cohomology ring in odd and zero characteristic for most examples.

Symplectic Geometry · Mathematics 2016-07-25 Thomas John Baird

We give a new method to construct linear spaces of matrices of constant rank, based on truncated graded cohomology modules of certain vector bundles as well as on the existence of graded Artinian modules with pure resolutions. Our method…

Algebraic Geometry · Mathematics 2017-02-07 Ada Boralevi , Daniele Faenzi , Paolo Lella

Based on Morse theory for the energy functional on path spaces we develop a deformation theory for mapping spaces of spheres into orthogonal groups. This is used to show that these mapping spaces are weakly homotopy equivalent, in a stable…

Algebraic Topology · Mathematics 2021-04-14 Jost-Hinrich Eschenburg , Bernhard Hanke

We study vector bundles on the moduli stack of elliptic curves over a local ring R. If R is a field or a discrete valuation ring of (residue) characteristic not 2 or 3, all these vector bundles are sums of line bundles. For R the 3-local…

Algebraic Geometry · Mathematics 2015-04-21 Lennart Meier

We introduce a general theory of parametrized objects in the setting of infinity categories. Although spaces and spectra parametrized over spaces are the most familiar examples, we establish our theory in the generality of objects of a…

Algebraic Topology · Mathematics 2018-12-19 Matthew Ando , Andrew J. Blumberg , David Gepner

This paper investigates the cohomological property of vector bundles on biprojective space. We will give a criterion for a vector bundle to be isomorphic to the tensor product of pullbacks of exterior products of differential sheaves.

Algebraic Geometry · Mathematics 2018-01-09 Francesco Malaspina , Chikashi Miyazaki

We give a classification of rank $r$ torus equivariant vector bundles $\mathcal{E}$ on a toric scheme $\mathfrak{X}$ over a discrete valuation ring $\mathcal{O}$, in terms of graded piecewise linear maps $\Phi$ from the fan of…

Algebraic Geometry · Mathematics 2025-05-02 Kiumars Kaveh , Christopher Manon , Boris Tsvelikhovskiy

Tiny fluctuations of the Cosmic Microwave Background as well as various observable quantities obtained by spin raising and spin lowering of the effective gravitational lensing potential of distant galaxies and galaxy clusters, are described…

Probability · Mathematics 2018-05-04 Anatoliy Malyarenko

We study the moduli stacks of real vector bundles of fixed rank and degree on a type I real algebraic curve and determine its mod 2 cohomology algebra in terms of characteristic classes.

Algebraic Geometry · Mathematics 2026-05-29 Luca Dal Molin , Frank Neumann

Differential calculi are obtained for quantum homogeneous spaces by extending Woronowicz' approach to the present context. Representation theoretical properties of the differential calculi are investigated. Connections on quantum…

Quantum Algebra · Mathematics 2007-05-23 R. B. Zhang

We develop the theory of invariant random fields in vector bundles. The spectral decomposition of an invariant random field in a homogeneous vector bundle generated by an induced representation of a compact connected Lie group $G$ is…

Probability · Mathematics 2014-11-13 Anatoliy Malyarenko

This monograph is devoted to the theory of vector-valued modular forms for orthogonal groups of signature (2,n). Our purpose is multi-layered: (1) to lay a foundation of the theory of vector-valued orthogonal modular forms; (2) to develop…

Algebraic Geometry · Mathematics 2024-08-13 Shouhei Ma

We show how to use divisors on the projectivized Hodge bundle to construct special vector-valued modular forms and then apply invariant theory to construct all vector-valued Siegel modular forms of level two and degree two. Thus we…

Algebraic Geometry · Mathematics 2026-05-14 Fabien Cléry , Gerard van der Geer
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