Results 21 to 30 of about 50 (50)

On naturally graded Lie and Leibniz superalgebras

open access: yes
In general, the study of gradations has always represented a cornerstone in algebra theory. In particular, \textit{naturally graded} seems to be the first and the most relevant gradation when it comes to nilpotent algebras, a large class of solvable ones.
Navarro, Rosa M.   +2 more
core   +1 more source

Real models for the framed little n$n$‐disks operads

open access: yesJournal of Topology, Volume 18, Issue 4, December 2025.
Abstract We study the action of the orthogonal group on the little n$n$‐disks operads. As an application we provide small models (over the reals) for the framed little n$n$‐disks operads. It follows in particular that the framed little n$n$‐disks operads are formal (over the reals) for n$n$ even and coformal for all n$n$.
Anton Khoroshkin, Thomas Willwacher
wiley   +1 more source

Existence and orthogonality of stable envelopes for bow varieties

open access: yesBulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3249-3306, November 2025.
Abstract Stable envelopes, introduced by Maulik and Okounkov, provide a family of bases for the equivariant cohomology of symplectic resolutions. They are part of a fascinating interplay between geometry, combinatorics and integrable systems. In this expository article, we give a self‐contained introduction to cohomological stable envelopes of type A$A$
Catharina Stroppel, Till Wehrhan
wiley   +1 more source

Prosoluble subgroups of the profinite completion of the fundamental group of compact 3‐manifolds

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 4, October 2025.
Abstract We give a description of finitely generated prosoluble subgroups of the profinite completion of 3‐manifold groups and toral relatively hyperbolic virtually compact special groups.
Lucas C. Lopes, Pavel A. Zalesskii
wiley   +1 more source

On the Robustness of Dirichlet–Neumann Coupling Schemes for Fluid‐Structure‐Interaction Problems With Nearly‐Closed Fluid Domains

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 18, 30 September 2025.
ABSTRACT The partitioned approach for fluid‐structure interaction (FSI) simulations involves solving the structural and flow field problems sequentially. This approach allows separate settings for the fluid and solid subsystems, ensuring modularity and leveraging advanced commercial and open‐source software capabilities to offer increased flexibility ...
A. Aissa‐Berraies   +3 more
wiley   +1 more source

On the uniqueness of maximal solvable extensions of nilpotent Lie superalgebras

open access: yes
In the present paper under certain conditions the description of maximal solvable extension of nilpotent Lie superalgebras is obtained. Namely, we establish that under the condition which ensures the fulfillment of an analogue of Lie\u27s theorem, a ...
Omirov, Bakhrom, Solijanova, Gulkhayo
core  

Twistor theory at fifty: from contour integrals to twistor strings. [PDF]

open access: yesProc Math Phys Eng Sci, 2017
Atiyah M, Dunajski M, Mason LJ.
europepmc   +1 more source

Spacelike Singularities and Hidden Symmetries of Gravity. [PDF]

open access: yesLiving Rev Relativ, 2008
Henneaux M, Persson D, Spindel P.
europepmc   +1 more source

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