Results 111 to 120 of about 81,882 (247)
Realizability of tropical pluri‐canonical divisors
Journal of the London Mathematical Society, Volume 110, Issue 6, December 2024.Abstract Consider a pair consisting of an abstract tropical curve and an effective divisor from the linear system associated to k$k$ times the canonical divisor for k∈Z⩾1$k \in \mathbb {Z}_{\geqslant 1}$. In this article, we give a purely combinatorial criterion to determine if such a pair arises as the tropicalization of a pair consisting of a smooth ...
Felix Röhrle, Johannes Schwab
wiley +1 more source
Journal of Topology, Volume 17, Issue 4, December 2024.Abstract In this paper, we study the left‐orderability of 3‐manifold groups using an enhancement, called recalibration, of Calegari and Dunfield's ‘flipping’ construction, used for modifying Homeo+(S1)$\text{Homeo}_+(S^1)$‐representations of the fundamental groups of closed 3‐manifolds.
Steven Boyer +2 more
wiley +1 more source
Equivariant Todd Classes for Toric Varieties [PDF]
arXiv, 2003 For a complete toric variety, we obtain an explicit formula for the localized equivariant Todd class in terms of the combinatorial data -- the fan. This is based on the equivariant Riemann-Roch theorem and the computation of the equivariant cohomology and equivariant homology of toric varieties.
arxiv
Equivariant birational types and derived categories
Mathematische Nachrichten, Volume 297, Issue 11, Page 4333-4355, November 2024.Abstract We investigate equivariant birational geometry of rational surfaces and threefolds from the perspective of derived categories.
Christian Böhning +2 more
wiley +1 more source
Equivariant cohomology and cohomological field theories [PDF]
Nuclear Physics B - Proceedings Supplements, 1995 A general method is given to construct a class of observables in topological field theories.
openaire +2 more sources
Oriented Algebras and the Hochschild Cohomology Group
Mathematics, 2018 Koam and Pirashivili developed the equivariant version of Hochschild cohomology by mixing the standard chain complexes computing group with associative algebra cohomologies to obtain the bicomplex C ˜ G * ( A , X ).
Ali N. A. Koam
doaj +1 more source
Vertex Algebras and the Equivariant Lie Algebroid Cohomology [PDF]
arXiv, 2013 A vertex-algebraic analogue of the Lie algebroid complex is constructed, which generalizes the "small" chiral de Rham complex on smooth manifolds. The notion of VSA-inductive sheaves is also introduced. This notion generalizes that of sheaves of vertex superalgebras. The complex mentioned above is constructed as a VSA-inductive sheaf. With this complex,
arxiv
Constant and Equivariant Cyclic Cohomology [PDF]
Letters in Mathematical Physics, 2006 In this note we prove that the constant and equivariant cyclic cohomology of algebras coincide. This shows that constant cyclic cohomology is rich and computable.
openaire +3 more sources
Effective action for relativistic hydrodynamics: fluctuations, dissipation, and entropy inflow
Journal of High Energy Physics, 2018 We present a detailed and self-contained analysis of the universal SchwingerKeldysh effective field theory which describes macroscopic thermal fluctuations of a relativistic field theory, elaborating on our earlier construction [1]. We write an effective
Felix M. Haehl +2 more
doaj +1 more source
The equivariant Spivak normal bundle and equivariant surgery for compact Lie groups [PDF]
arXiv, 2017 We generalize the results of a previous paper of ours to compact Lie groups. Using a recently developed ordinary equivariant homology and cohomology, we define equivariant Poincare complexes with the properties that (1) every compact G-manifold is an equivariant Poincare complex, (2) every finite equivariant Poincare complex (with some mild additional ...
arxiv