Results 61 to 70 of about 18,601 (168)

Schubert Calculus, Schubert Cell, Schubert Cycle, and Schubert Polynomials

open access: yes, 2001
We briefly describe each of the four topics: Schubert Calculus, Schubert Cell, Schubert Cycle, and Schubert Polynomials.
openaire   +2 more sources

A Century of Drought Research (1900–2023): Scientific Developments, Methodological Innovations, and Emerging Frontiers

open access: yesWater Resources Research, Volume 62, Issue 1, January 2026.
Abstract Drought significantly affects water resources, agriculture, energy, and ecosystems, revealing enduring socio‐economic vulnerabilities over the centuries. This review synthesizes a century of development and recent advances in drought research (1900–2023), drawing on a bibliometric analysis of over 152,000 peer‐reviewed publications. The review
Amitesh Sabut, Ashok Mishra
wiley   +1 more source

Quantum Giambelli formulas for isotropic Grassmannians [PDF]

open access: yes, 2018
Let X be a symplectic or odd orthogonal Grassmannian which parametrizes isotropic subspaces in a vector space equipped with a nondegenerate (skew) symmetric form.
Buch, Anders   +2 more
core  

Equivariant quantum Schubert polynomials

open access: yesAdvances in Mathematics, 2014
We establish an equivariant quantum Giambelli formula for partial flag varieties. The answer is given in terms of a specialization of universal double Schubert polynomials. Along the way, we give new proofs of the presentation of the equivariant quantum cohomology ring, as well as Graham-positivity of the structure constants in equivariant quantum ...
Anderson, D., Chen, Linda
openaire   +4 more sources

Participation Disenchants: How Online Political Participation Decreases Online Political Efficacy in China

open access: yesRegulation &Governance, Volume 20, Issue 1, Page 35-63, January 2026.
ABSTRACT Existing literature largely agrees that authoritarian regimes establish channels for political participation to gather valuable information on citizens' anti‐regime sentiments and policy preferences and to supervise lower‐level bureaucrats and firms.
Anton Bogs
wiley   +1 more source

Schubert Polynomials and the Nilcoxeter Algebra

open access: yesAdvances in Mathematics, 1994
Schubert polynomials \({\mathfrak S}_ \sigma(x_ 1,x_ 2,\dots)\) indexed by permutations have been introduced and investigated by \textit{I. N. Bernstein}, \textit{I. M. Gel'fand} and \textit{S. I. Gel'fand} [Russ. Math. Surveys 28, No. 3, 1-26 (1973; Zbl 0286.57025)], \textit{M. Demazure} [Ann. Sci. École Norm. Sup., IV. Sér.
Fomin, Sergey, Stanley, Richard P.
openaire   +2 more sources

From pathological to paradigmatic: A retrospective on Eremenko and Lyubich's entire functions

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract This paper surveys the impact of Eremenko and Lyubich's paper “Examples of entire functions with pathological dynamics”, published in 1987 in the Journal of the London Mathematical Society. Through a clever extension and use of classical approximation theorems, the authors constructed examples exhibiting behaviours previously unseen in ...
Núria Fagella, Leticia Pardo‐Simón
wiley   +1 more source

Multivariate Polynomials in Sage [PDF]

open access: yes, 2011
We have developed a patch implementing multivariate polynomials seen as a multi-base algebra. The patch is to be released into the software Sage and can already be found within the Sage-Combinat distribution.
Pons, Viviane
core   +5 more sources

Morphophysiological and Productive Responses of Forage Cactus Clones to the Water and Nutrient Use in the Brazilian Semi‐Arid Region

open access: yesGrass and Forage Science, Volume 80, Issue 4, December 2025.
ABSTRACT Crops adapted to semi‐arid conditions enhance forage supply amid water scarcity. This study aimed to compare six forage cactus clones (Orelha de Elefante Mexicana [OEM, Opuntia stricta (Haw.) Haw.]; Orelha de Elefante Africana [OEA, Opuntia undulata Griffiths]; V19, Opuntia larreyi F.A.C.
João Pedro Alves de Souza Santos   +14 more
wiley   +1 more source

K-Orbit closures and Hessenberg varieties

open access: yesForum of Mathematics, Sigma
This article explores the relationship between Hessenberg varieties associated with semisimple operators with two eigenvalues and orbit closures of a spherical subgroup of the general linear group.
Mahir Bilen Can   +3 more
doaj   +1 more source

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