Results 81 to 90 of about 27,072 (238)

Structure‐Aware Machine Learning for Polymers: A Hierarchical Graph Network for Predicting Properties From Statistical Ensembles

Macromolecular Rapid Communications, EarlyView.
This work presents a structure‐aware graph convolutional network that models polymers as statistical ensembles to predict macroscopic properties. By combining topologically realistic graphs generated via kinetic Monte Carlo simulations with explicit molar mass distributions, the framework achieves high accuracy in classifying architectures and ...
Julian Kimmig, Yannik Köster, Timo Koswig, Punith Raviswamy, Subhash V. S. Ganti, Stefan Zechel, Christopher Kuenneth, Ulrich S. Schubert   +7 more
wiley   +1 more source

Schubert line defects in 3d GLSMs. Part I. Complete flag manifolds and quantum Grothendieck polynomials

Journal of High Energy Physics
We construct new half-BPS line defects in 3d N = 2 $$ \mathcal{N}=2 $$ supersymmetric quiver gauge theories whose Higgs branches are complete flag manifolds X = Fl(n). Upon circle compactification, the bulk theory flows to a non-linear sigma model (NLSM)
Cyril Closset, Wei Gu, Osama Khlaif, Eric Sharpe, Hao Zhang, Hao Zou   +5 more
doaj   +1 more source

An inverse Grassmannian Littlewood–Richardson rule and extensions

Forum of Mathematics, Sigma
Chow rings of flag varieties have bases of Schubert cycles $\sigma _u $ , indexed by permutations. A major problem of algebraic combinatorics is to give a positive combinatorial formula for the structure constants of this basis.
Oliver Pechenik, Anna Weigandt
doaj   +1 more source

Residual intersections and Schubert varieties

Journal of Algebra
16 pages, comments ...
Sara Angela Filippini, Xianglong Ni, Jacinta Torres, Jerzy Weyman   +3 more
openaire   +2 more sources

Decompositions of Schubert varieties and small resolutions

Communications in Algebra, 2023
We provide a method for gluing (small) resolutions of singularities of Schubert varieties \(X_w\). An explicit isomorphism of \(X_w\) with an (iterated) bundle is constructed when \(w\) has an (iterated) BP decomposition. Combined with the first result this gives many new small resolutions of Schubert varieties.
openaire   +2 more sources

Linking Environmental Health and Civic Health: An Analysis of Air Pollution and Charitable Giving

Nonprofit Management and Leadership, EarlyView.
ABSTRACT This study examines the effect of air pollution on charitable giving. We suggest that the burdens associated with poor air quality are associated with a dampening of civic and philanthropic engagement. Analyzing 12 years of county‐level data from the United States with fixed‐effects OLS and instrumental variables regressions, we identify a ...
Gregory D. Saxton, Michelle Benson, Chao Guo, Daniel G. Neely, Tahmina Ahmed, Mohammad Maruf Hasan, Shujie Zhang   +6 more
wiley   +1 more source

Schubert Eisenstein Series and Poisson Summation for Schubert Varieties

American Journal of Mathematics
Abstract: Schubert Eisenstein series are defined by restricting the summation in a degenerate Eisenstein series to a particular Schubert variety. In the case of $\GL_3$ over $\QQ$ Bump and the first author proved that these Schubert Eisenstein series have meromorphic continuations in all parameters and conjectured the same is true in general.
Choie, YoungJu, Getz, Jayce R.
openaire   +3 more sources

Different Stakeholders, Different Pathways: How Capacity Profiles Shape Managerial Priorities for Beneficiaries and Staff in Decision‐Making

Nonprofit Management and Leadership, EarlyView.
ABSTRACT This study investigates how combinations of organizational capacities shape nongovernmental organization (NGO) managers' prioritization of staff and beneficiaries. While stakeholder theory identifies which stakeholders' interests attract attention, it offers limited guidance on how managers ultimately prioritize among stakeholders in decision ...
Robbie Waters Robichau, Tara Kolar Bryan, Rebekah St. Clair Sims   +2 more
wiley   +1 more source

Partial recovery of large seed arrival following ecological restoration in fragmented tropical rainforests

Oikos, EarlyView.
Forest restoration success depends crucially on the reinitiation of ecological processes such as seed arrival that drive natural regeneration. We know little about whether, by increasing and diversifying local seed sources to alleviate seed limitation, and attracting animal frugivores to alleviate dispersal limitation, restoration could shift seed ...
Aparna Krishnan, Jyotsna Nag, S. Arun, Divya Mudappa, T. R. Shankar Raman, Mahesh Sankaran, Anand M. Osuri   +6 more
wiley   +1 more source

On Multiplicities of Points on Schubert Varieties in Graßmannians II [PDF]

Journal of Algebraic Combinatorics, 2005
We answer some questions related to multiplicity formulas by Rosenthal and Zelevinsky and by Lakshmibai and Weyman for points on Schubert varieties in Grassmannians. In particular, we give combinatorial interpretations in terms of nonintersecting lattice paths of these formulas, which makes the equality of the two formulas immediately obvious ...
openaire   +6 more sources