Results 51 to 60 of about 17,737 (190)

Hirzebruch-Zagier classes and rational elliptic curves over quintic fields

open access: yes, 2021
Conditionally on a conjecture on the \'etale cohomology of Hilbert modular surfaces and some minor technical assumptions, we establish new instances of the equivariant BSD-conjecture in rank $0$ with applications to the arithmetic of rational elliptic ...
Fornea, Michele, Jin, Zhaorong
core  

Hochschild–Mitchell cohomology and Galois extensions

open access: yesJournal of Pure and Applied Algebra, 2007
21 ...
Herscovich, E., Solotar, A.
openaire   +6 more sources

Taking limits in topological recursion

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 3, September 2025.
Abstract When does topological recursion applied to a family of spectral curves commute with taking limits? This problem is subtle, especially when the ramification structure of the spectral curve changes at the limit point. We provide sufficient (straightforward‐to‐use) conditions for checking when the commutation with limits holds, thereby closing a ...
Gaëtan Borot   +4 more
wiley   +1 more source

F-zips with additional structure on splitting models of Shimura varieties

open access: yesForum of Mathematics, Sigma
We construct universal G-zips on good reductions of the Pappas-Rapoport splitting models for PEL-type Shimura varieties. We study the induced Ekedahl-Oort stratification, which sheds new light on the mod p geometry of splitting models.
Xu Shen, Yuqiang Zheng
doaj   +1 more source

Galois cohomology of completed link groups [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
11 pages, AMS-LaTeX 2e, v2 to appear in Proc.Amer.Math.Soc., minor ...
Blomer, Inga   +2 more
openaire   +3 more sources

Parity of ranks of Jacobians of curves

open access: yesProceedings of the London Mathematical Society, Volume 131, Issue 3, September 2025.
Abstract We investigate Selmer groups of Jacobians of curves that admit an action of a non‐trivial group of automorphisms, and give applications to the study of the parity of Selmer ranks. Under the Shafarevich–Tate conjecture, we give an expression for the parity of the Mordell–Weil rank of an arbitrary Jacobian in terms of purely local invariants ...
Vladimir Dokchitser   +3 more
wiley   +1 more source

Hasse principle for Kummer varieties in the case of generic 2‐torsion

open access: yesProceedings of the London Mathematical Society, Volume 131, Issue 1, July 2025.
Abstract Conditional on finiteness of relevant Shafarevich–Tate groups, Harpaz and Skorobogatov used Swinnerton‐Dyer's descent‐fibration method to establish the Hasse principle for Kummer varieties associated to a 2‐covering of a principally polarised abelian variety under certain largeness assumptions on its mod 2 Galois image.
Adam Morgan
wiley   +1 more source

The motivic Adams conjecture

open access: yesJournal of Topology, Volume 18, Issue 2, June 2025.
Abstract We solve a motivic version of the Adams conjecture with the exponential characteristic of the base field inverted. In the way of the proof,, we obtain a motivic version of mod k$k$ Dold theorem and give a motivic version of Brown's trick studying the homogeneous variety (NGLrT)∖GLr$(N_{\mathrm{GL}_r} T)\backslash \mathrm{GL}_r$ which turns out
Alexey Ananyevskiy   +3 more
wiley   +1 more source

Arithmetic Satake compactifications and algebraic Drinfeld modular forms

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract In this article, we construct the arithmetic Satake compactification of the Drinfeld moduli schemes of arbitrary rank over the ring of integers of any global function field away from the level structure, and show that the universal family extends uniquely to a generalized Drinfeld module over the compactification.
Urs Hartl, Chia‐Fu Yu
wiley   +1 more source

Extensions of tautological rings and motivic structures in the cohomology of ${\overline {\mathcal {M}}}_{g,n}$

open access: yesForum of Mathematics, Pi
We study collections of subrings of $H^*({\overline {\mathcal {M}}}_{g,n})$ that are closed under the tautological operations that map cohomology classes on moduli spaces of smaller dimension to those on moduli spaces of larger dimension and ...
Samir Canning, Hannah Larson, Sam Payne
doaj   +1 more source

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