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There is a spectral sequence technique in order to estimate the local cohomology of a ring by the local cohomology of a certain form ring. As applications there are information on the descent of homological properties (Cohen-Macaulay,…

alg-geom · Mathematics 2008-02-03 Peter Schenzel

We construct a new type of spectral sequences for the mixed Hodge structures on the cohomology of locally symmetric varieties. These spectral sequences converge to the edge components in the Hodge triangles, and the E1-terms are expressed…

Algebraic Geometry · Mathematics 2025-03-04 Shouhei Ma

We develop a technique for calculating the cohomology groups of spaces of complex parametric knots in ${\mathbb C}^k$, $k \geq 3$, and carry out these calculations to obtain these groups of low dimensions.

Algebraic Topology · Mathematics 2023-10-16 V. A. Vassiliev

In this article, we compute the boundary cohomology of the arithmetic group Sp6(Z) with coefficients in the trivial representation. Our computation utilizes the Borel-Serre compactification and the associated spectral sequence.

Number Theory · Mathematics 2026-04-20 Ryuto Mitoma

This article studies some features of quantum field theories with internal supersymmetry, focusing mainly on 2-dimensional non-linear sigma models which take values in a coset superspace. It is discussed how BRST operators from the target…

High Energy Physics - Theory · Physics 2010-05-25 Constantin Candu , Thomas Creutzig , Vladimir Mitev , Volker Schomerus

We show that the BRST operator of Neveu-Schwarz-Ramond superstring is closely related to de Rham differential on the moduli space of decorated super-Riemann surfaces P. We develop formalism where superstring amplitudes are computed via…

High Energy Physics - Theory · Physics 2009-10-30 Alexander Belopolsky

We show a spectral sequence for the rational Khovanov homology of an oriented link in terms of the rational Khovanov complexes and homologies of the link surgeries along an admissible cut. As a non trivial corollary, we give an explicit…

Geometric Topology · Mathematics 2017-11-07 Juan Manuel Burgos

Various aspects of the de Rham cohomology of Hopf algebras are discussed. In particular, it is shown that the de Rham cohomology of an algebra with the differentiable coaction of a cosemisimple Hopf algebra with trivial 0-th cohomology…

Quantum Algebra · Mathematics 2015-06-26 EJ Beggs , Tomasz Brzezinski

This write-up describes an efficient numerical method for the Monte Carlo calculation of the spectral density of current in the multi-junction single-electron devices and hopping structures. In future we plan to expand this write-up into a…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Viktor A. Sverdlov , Yusuf A. Kinkhabwala , Alexander N. Korotkov

The Calculus of Wrapped Compartments (CWC) is a variant of the Calculus of Looping Sequences (CLS). While keeping the same expressiveness, CWC strongly simplifies the development of automatic tools for the analysis of biological systems.…

Computational Engineering, Finance, and Science · Computer Science 2010-06-29 Mario Coppo , Ferruccio Damiani , Maurizio Drocco , Elena Grassi , Angelo Troina

The BMS$_3$ Lie algebra belongs to a one-parameter family of Lie algebras obtained by centrally extending abelian extensions of the Witt algebra by a tensor density representation. In this paper we call such Lie algebras…

High Energy Physics - Theory · Physics 2025-04-15 José Figueroa-O'Farrill , Girish S Vishwa

We consider a BRST approach to G/H coset WZNW models, {\it i.e.} a formulation in which the coset is defined by a BRST condition. We will give the precise ingrediences needed for this formulation. Then we will prove the equivalence of this…

High Energy Physics - Theory · Physics 2011-07-19 Stephen Hwang , Henric Rhedin

We discuss the renormalizability of quantum gravity near two dimensions based on the results obtained by a computation of the BRST-antibracket cohomology in the space of local functionals of the fields and antifields. We justify the…

High Energy Physics - Theory · Physics 2009-10-30 Yoshihisa Kitazawa , Rie Kuriki , Katsumi Shigura

In [F. Xu, On the cohomology rings of small categories, J. Pure Appl. Algebra 212 (2008), 2555-2569], Xu constructs a LHS-spectral sequence for target regular extensions of small categories. We extend this construction to ext-groups and…

Algebraic Topology · Mathematics 2024-02-01 Ergun Yalcin

The singular chain complex of the iterated loop space is expressed in terms of the cobar construction. After that we consider the spectral sequence of the cobar construction and calculate its first term over Z/p-coefficients and over a…

Algebraic Topology · Mathematics 2007-05-23 V. A. Smirnov

This paper presents a new method for the solution of multiscale stochastic differential equations at the diffusive time scale. In contrast to averaging-based methods, e.g., the heterogeneous multiscale method (HMM) or the equation-free…

Numerical Analysis · Mathematics 2016-09-19 A. Abdulle , G. A. Pavliotis , U. Vaes

We introduce a generalization of the Stirling numbers via symmetric functions involving two weight functions. The resulting extension unifies previously known Stirling-type sequences with known symmetric function forms, as well as other…

By modifying the ideas from our previous paper [SIGMA 13 (2017), 075, 26 pages, arXiv:1705.04005], we construct spectral triples from implementations of covariant derivations on the quantum disk.

Operator Algebras · Mathematics 2019-05-29 Slawomir Klimek , Matt McBride , John Wilson Peoples

We study the Bott-Chern cohomology of complex orbifolds obtained as quotient of a compact complex manifold by a finite group of biholomorphisms.

Differential Geometry · Mathematics 2013-05-30 Daniele Angella

Our constructions provide a systematic way to study cohomology pre-algebraic structures via classical cohomology, simplifying computations and enabling the use of established techniques.

Rings and Algebras · Mathematics 2026-04-01 H. Alhussein