Chern class formulas for classical-type degeneracy loci [PDF]
Compositio Mathematica, 2015 Employing a simple and direct geometric approach, we prove formulas for a large class of degeneracy loci in types B, C, and D, including those coming from all isotropic Grassmannians.
David Anderson, W. Fulton
semanticscholar +1 more source
Chern-Weil global symmetries and how quantum gravity avoids them
Journal of High Energy Physics, 2021 We draw attention to a class of generalized global symmetries, which we call “Chern-Weil global symmetries,” that arise ubiquitously in gauge theories. The Noether currents of these Chern-Weil global symmetries are given by wedge products of gauge field ...
Ben Heidenreich +5 more
doaj +1 more source
Biharmonic almost complex structures
Forum of Mathematics, Sigma, 2023 This project uses methods in geometric analysis to study almost complex manifolds. We introduce the notion of biharmonic almost complex structure on a compact almost Hermitian manifold and study its regularity and existence in dimension four.
Weiyong He
doaj +1 more source
Vertex operator algebras and topologically twisted Chern-Simons-matter theories
Journal of High Energy Physics, 2023 We consider several topologically twisted Chern-Simons-matter theories and propose boundary VOAs whose module categories should model the category of line operators of the 3d bulk.
Niklas Garner
doaj +1 more source
Journal of High Energy Physics, 2021 We study the interplay between four-derivative 4d gauged supergravity, holography, wrapped M5-branes, and theories of class ℛ $$ \mathrm{\mathcal{R}} $$ .
Nikolay Bobev +4 more
doaj +1 more source
Geophysical Monograph Series, Page 169-190., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi +9 more
wiley +1 more source
An Algorithm to Compute the Topological Euler Characteristic, Chern-Schwartz-MacPherson Class and Segre Class of Projective Varieties [PDF]
, 2015 Let $V$ be a closed subscheme of a projective space $\mathbb{P}^n$. We give an algorithm to compute the Chern-Schwartz-MacPherson class, Euler characteristic and Segre class of $ V$.
Helmer, Martin
core +1 more source
On Trivialities of Chern Classes [PDF]
Acta Mathematica Hungarica, 2014 A finite $CW$-complex $X$ is $C$-trivial if for every complex vector bundle $ $ over $X$, the total Chern class $c( )=1$. In this note we completely determine when each of the following spaces are $C$-trivial: suspensions of stunted real projective spaces, suspensions of stunted complex projective spaces and suspensions of stunted quaternionic ...
Naolekar, Aniruddha C. +1 more
openaire +2 more sources
Chern Classes of Splayed Intersections [PDF]
Canadian Journal of Mathematics, 2015 AbstractWe generalize the Chern class relation for the transversal intersection of two nonsingular varieties to a relation for possibly singular varieties, under a splayedness assumption. We show that the relation for the Chern–Schwartz–MacPherson classes holds for two splayed hypersurfaces in a nonsingular variety, and under a strong splayedness ...
Aluffi, P, Faber, E
openaire +3 more sources
Chern class formulas for ₂ Schubert loci [PDF]
, 2011 We define degeneracy loci for vector bundles with structure group $G_2$, and give formulas for their cohomology (or Chow) classes in terms of the Chern classes of the bundles involved.
Dave Anderson, Dave Anderson
semanticscholar +2 more sources