Results 71 to 80 of about 13,276 (167)
A combinatorial proof that Schubert vs. Schur coefficients are nonnegative [PDF]
, 2014 We give a combinatorial proof that the product of a Schubert polynomial by a Schur polynomial is a nonnegative sum of Schubert polynomials. Our proof uses Assaf's theory of dual equivalence to show that a quasisymmetric function of Bergeron and Sottile ...
Assaf, Sami +2 more
core
Wachs permutations, Bruhat order and weak order
European Journal of CombinatoricsWe study the partial orders induced on Wachs and signed Wachs permutations by the Bruhat and weak orders of the symmetric and hyperoctahedral groups. We show that these orders are graded, determine their rank function, characterize their ordering and covering relations, and compute their characteristic polynomials, when partially ordered by Bruhat ...
Brenti, Francesco, Sentinelli, Paolo
openaire +3 more sources
2‐Adic Quantum Mechanics, Continuous‐Time Quantum Walks, and the Space Discreteness
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract The authors show that a large class of 2‐adic Schrödinger equations is the scaling limit of certain continuous‐time quantum Markov chains (CTQMCs). Practically, a discretization of such an equation gives a CTQMC. As a practical result, new types of continuous‐time quantum walks (CTQWs) on graphs using two symmetric matrices are constructed ...
W. A. Zúñiga‐Galindo
wiley +1 more source
Zonotopes associated with higher Bruhat orders
Discrete Mathematics, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Felsner, Stefan, Ziegler, Günter M.
openaire +2 more sources
Thermal Pressurization in Rough Faults: Implications for Frictional Melting and Rupture Dynamics
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.Abstract Thermal pressurization (TP) is widely accepted as one of the primary dynamic frictional weakening mechanisms during earthquakes. However, most studies, whether experimental or numerical, have focused on the effects of TP on planar faults, while natural fault surfaces typically exhibit a fractal rough geometry.
Nir Z. Badt, Yuval Tal
wiley +1 more source
Strong subgroup recurrence and the Nevo–Stuck–Zimmer theorem
Proceedings of the London Mathematical Society, Volume 130, Issue 6, June 2025.Abstract Let Γ$\Gamma$ be a countable group and Sub(Γ)$\mathrm{Sub}(\Gamma)$ its Chabauty space, namely, the compact Γ$\Gamma$‐space consisting of all subgroups of Γ$\Gamma$. We call a subgroup Δ∈Sub(Γ)$\Delta \in \mathrm{Sub}(\Gamma)$ a boomerang subgroup if for every γ∈Γ$\gamma \in \Gamma$, γniΔγ−ni→Δ$\gamma ^{n_i} \Delta \gamma ^{-n_i} \rightarrow ...
Yair Glasner, Waltraud Lederle
wiley +1 more source
Mixed Bruhat operators and Yang-Baxter equations for Weyl groups
, 1998 We introduce and study a family of operators which act in the span of a Weyl group $W$ and provide a multi-parameter solution to the quantum Yang-Baxter equations of the corresponding type.
Brenti, Francesco +2 more
core +4 more sources
Detecting Millimetric Slow Slip Events Along the North Anatolian Fault With GNSS
Geophysical Research Letters, Volume 52, Issue 10, 28 May 2025.Abstract Active faults release part of the elastic strain energy stored in the crust via aseismic slip, either through slow slip events (SSEs) or steady slowly creep. However, spatial and temporal interactions between these different styles of aseismic slip have yet to be quantified especially at depth.
Alpay Özdemir +7 more
wiley +1 more source
Local character expansions and asymptotic cones over finite fields
Proceedings of the London Mathematical Society, Volume 130, Issue 5, May 2025.Abstract We generalise Gelfand–Graev characters to R/Z$\mathbb {R}/\mathbb {Z}$‐graded Lie algebras and lift them to produce new test functions to probe the local character expansion in positive depth. We show that these test functions are well adapted to compute the leading terms of the local character expansion and relate their determination to the ...
Dan Ciubotaru, Emile Okada
wiley +1 more source
Skew Divided Difference Operators and Schubert Polynomials
Symmetry, Integrability and Geometry: Methods and Applications, 2007 We study an action of the skew divided difference operators on the Schubert polynomials and give an explicit formula for structural constants for the Schubert polynomials in terms of certain weighted paths in the Bruhat order on the symmetric group.
Anatol N. Kirillov
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