Results 111 to 120 of about 10,518 (235)
On the Euler characteristic of S$S$‐arithmetic groups
Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.Abstract We show that the sign of the Euler characteristic of an S$S$‐arithmetic subgroup of a simple algebraic group depends on the S$S$‐congruence completion only, except possibly in type 6D4${}^6 D_4$. Consequently, the sign is a profinite invariant for such S$S$‐arithmetic groups with the congruence subgroup property. This generalizes previous work
Holger Kammeyer, Giada Serafini
wiley +1 more source
Local equivalence and refinements of Rasmussen's s‐invariant
Journal of Topology, Volume 19, Issue 1, March 2026.Abstract Inspired by the notions of local equivalence in monopole and Heegaard Floer homology, we introduce a version of local equivalence that combines odd Khovanov homology with equivariant even Khovanov homology into an algebraic package called a local even–odd (LEO) triple.
Nathan M. Dunfield +2 more
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The ∞$\infty$‐categorical reflection theorem and applications
Journal of Topology, Volume 19, Issue 1, March 2026.Abstract We prove an ∞$\infty$‐categorical version of the reflection theorem of AdÁmek and Rosický [Arch. Math. 25 (1989), no. 1, 89–94]. Namely, that a full subcategory of a presentable ∞$\infty$‐category that is closed under limits and κ$\kappa$‐filtered colimits is a presentable ∞$\infty$‐category.
Shaul Ragimov, Tomer M. Schlank
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Obstructions to homotopy invariance of loop coproduct via parameterized fixed‐point theory
Journal of Topology, Volume 19, Issue 1, March 2026.Abstract Given f:M→N$f:M \rightarrow N$ a homotopy equivalence of compact manifolds with boundary, we use a construction of Geoghegan and Nicas to define its Reidemeister trace [T]∈π1st(LN,N)$[T] \in \pi _1^{st}(\mathcal {L}N, N)$. We realize the Goresky–Hingston coproduct as a map of spectra, and show that the failure of f$f$ to entwine the spectral ...
Lea Kenigsberg, Noah Porcelli
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Commutators of singular integrals on generalized $L^p$ spaces with variable exponent [PDF]
, 2004 Alexei Yu. Karlovich, Andrei K. Lerner
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10-Commutators, 13-commutators and odd derivations
Journal of Nonlinear Mathematical Physics, 2008 Let \(X_1\), \dots, \(X_n\in Vect(n)\) be vector fields on a smooth manifold \(M\) of dimension \(n\) and define the \(N\)-commutator as \(s_N(X_1,\ldots,X_N)=\sum (-1)^\sigma X_{\sigma(1)}\ldots X_{\sigma(N)}\) where the summation runs over the symmetric group \(Sym_N\) and \((-1)^\sigma\) is the sign of the permutation \(\sigma\).
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A note on transfer theorems [PDF]
International Journal of Group Theory, 2016 In this paper, we generalize some transfer theorems.~In particular, we derive one of the main results of Gagola(Contemp Math 524:49--60, 2010) from our results.
Haoran Yu
doaj
COMMUTANTS AND DOUBLE COMMUTANTS OF REFLEXIVE ALGEBRAS
Kyushu Journal of Mathematics, 1996 The author studies the commutant and the double commutant of the algebra \(\text{alg }{\mathcal L}\) of all bounded operators on a Banach space \(X\) leaving invariant each member of a lattice \({\mathcal L}\) of subspaces of \(X\). For example, he proves that when \({\mathcal L}\) is the pentagon subspace lattice, then the only operators commuting ...
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Weighted Estimates for Commutators of -Dimensional Rough Hardy Operators [PDF]
, 2013 Zhuanxi Ren, Shuangping Tao
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Commutator of two projections in prediction theory [PDF]
, 1986 Takahiko Nakazi
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