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Schubert Polynomials and Quiver Formulas [PDF]

open access: yesDuke Mathematical Journal, 2002
The work of Buch and Fulton established a formula for a general kind of degeneracy locus associated to an oriented quiver of type $A$. The main ingredients in this formula are Schur determinants and certain integers, the quiver coefficients, which ...
Buch, Anders Skovsted   +3 more
core   +7 more sources

Adolescents' trajectories of mental health in the MYRIAD trial. [PDF]

open access: yesJCPP Adv
Abstract Background This study explored adolescent's mental health trajectories over the course of a school‐based mindfulness‐based intervention trial (MYRIAD). It examined whether intervention condition (mindfulness vs. teaching‐as‐usual), individual‐level and contextual‐level factors were associated with different trajectories.
Holst CG   +8 more
europepmc   +2 more sources

Schubert polynomial expansions revisited

open access: yesForum of Mathematics, Sigma
We give an elementary approach utilizing only the divided difference formalism for obtaining expansions of Schubert polynomials that are manifestly nonnegative, by studying solutions to the equation $\sum Y_i\partial _i=\operatorname {id}$ on ...
Philippe Nadeau   +2 more
doaj   +3 more sources

Climate Change Challenges Grey Wolf Resilience: Insights From Dental Microwear. [PDF]

open access: yesEcol Lett
We investigate dietary plasticity in European grey wolves across interglacial periods using dental microwear texture analysis. Enhanced durophagy is associated with warm climates in both modern Polish and British Pleistocene wolves, indicating deep‐time behavioural flexibility.
Burtt AA   +7 more
europepmc   +2 more sources

Photoreceptor degeneration has heterogeneous effects on functional retinal ganglion cell types. [PDF]

open access: yesJ Physiol
Abstract figure legend Photoreceptor loss has heterogeneous effects on functional retinal ganglion cell (RGC) types. A, illustrations of cross‐sections of rd10 retinae at different time points during degeneration. Left: P30, rod degeneration has commenced, cones are still unaffected.
Dyszkant N   +6 more
europepmc   +2 more sources

Combinatorial description of the cohomology of the affine flag variety [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
We construct the affine version of the Fomin-Kirillov algebra, called the affine FK algebra, to investigatethe combinatorics of affine Schubert calculus for typeA. We introduce Murnaghan-Nakayama elements and Dunklelements in the affine FK algebra.
Seung Jin Lee
doaj   +1 more source

Upper bounds of Schubert polynomials [PDF]

open access: yesScience China Mathematics, 2021
14 pages, 4 ...
Fan, Neil Jiuyu, Guo, Peter Long
openaire   +3 more sources

A dual approach to structure constants for K-theory of Grassmannians [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
The problem of computing products of Schubert classes in the cohomology ring can be formulated as theproblem of expanding skew Schur polynomial into the basis of ordinary Schur polynomials. We reformulate theproblem of computing the structure constants
Huilan Li, Jennifer Morse, Pat Shields
doaj   +1 more source

A Murgnahan-Nakayama rule for Schubert polynomials [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
We expose a rule for multiplying a general Schubert polynomial with a power sum polynomial in $k$ variables. A signed sum over cyclic permutations replaces the signed sum over rim hooks in the classical Murgnahan-Nakayama rule. In the intersection theory
Andrew Morrison
doaj   +1 more source

Double Schubert polynomials do have saturated Newton polytopes

open access: yesForum of Mathematics, Sigma, 2023
We prove that double Schubert polynomials have the saturated Newton polytope property. This settles a conjecture by Monical, Tokcan and Yong. Our ideas are motivated by the theory of multidegrees.
Federico Castillo   +3 more
doaj   +1 more source

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