Results 41 to 50 of about 1,134,625 (212)

Values of the Pukánszky invariant in McDuff factors [PDF]

, 2008
In 1960 Pukánszky introduced an invariant associating to every masa in a separable II₁ factor a non-empty subset of the N ∪ {∞}. This invariant examines the multiplicity structure of the von Neumann algebra generated by
White, Stuart, White, S.A., Stuart White
core   +1 more source

Hierarchy of spaces of projective connection

Дифференциальная геометрия многообразий фигур, 2018
We consider the bundle of projective frames over a smooth manifold, i. e. the principal bundle whose typical fiber is the projective group. The giving fundamental-group connection in this bundle transforms it into a space of general projective connection.
Yu. Shevchenko
doaj  

Heights on ‘hybrid orbits’ in Shimura varieties

Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract We prove the ‘hybrid conjecture’ which is a common generalisation of the André–Oort conjecture and the André–Pink–Zannier conjecture, in the case of Shimura varieties of abelian type.
Rodolphe Richard, Andrei Yafaev
wiley   +1 more source

Differential geometry of Cartan connections

Publicationes Mathematicae Debrecen, 1995
For a more general notion of Cartan connection we define characteristic classes, we investigate their relation to usual characteristic classes.
Alekseevsky, D. V., Michor, P. W.
openaire   +3 more sources

Recognising flag varieties and reductive groups

Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract Fix a flat and projective morphism X→Σ$X\rightarrow \Sigma$ of schemes. We show, first, that any set of P1${\mathbb {P}}^1$‐fibrations on X$X$ defines a set of simple roots, a set of simple coroots and a Cartan matrix C$C$. Second, X$X$ is an étale F${\mathcal {F}}$‐bundle over some projective Σ$\Sigma$‐scheme, where F${\mathcal {F}}$ is the ...
Ian Grojnowski, Nicholas Shepherd‐Barron   +1 more
wiley   +1 more source

Higher order Cartan connections [PDF]

, 1996
summary:A Cartan connection associated with a pair $P(M,G^{\prime })\subset P(M,G)$ is defined in the usual manner except that only the injectivity of $\omega :T(P^{\prime })\rightarrow T(G)_{e}$ is required.
Virsik, George
core   +1 more source

(In)equivalence of metric-affine and metric effective field theories

European Physical Journal C: Particles and Fields, 2022
In a geometrical approach to gravity the metric and the (gravitational) connection can be independent and one deals with metric-affine theories. We construct the most general action of metric-affine effective field theories, including a generic matter ...
Gianfranco Pradisi, Alberto Salvio
doaj   +1 more source

On 7‐adic Galois representations for elliptic curves over Q$\mathbb {Q}$

Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract In recent years, significant progress has been made on Mazur's Program B, with many authors beginning a systematic classification of all possible images of p$p$‐adic Galois representations attached to elliptic curves over Q$\mathbb {Q}$. Currently, the classification is only complete for p∈{2,3,13,17}$p \in \lbrace 2,3,13,17\rbrace$.
Lorenzo Furio, Davide Lombardo
wiley   +1 more source

Cartan, Schouten and the search for connection

Historia Mathematica, 2018
The authors give a detailed mathematical exposition of a 1925--1926 collaboration between Élie Cartan and Jan Arnoldus Schouten based on published articles and on archival correspondence in the Archives of the Académie des Sciences in Paris and Schouten's papers at the Amsterdam Mathematical Centrum.
Cogliati, A., Mastrolia, P.
openaire   +2 more sources

Newton-Cartan connections with Torsion

, 2004
NA
Dereli, T., Kocak, S., Limoncu, M.
openaire   +4 more sources