Results 51 to 60 of about 197,691 (182)
Schubert polynomial expansions revisited
Forum of Mathematics, SigmaWe 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 +1 more source
Sir and Guys in 20th‐ and 21st‐Century American English
World Englishes, EarlyView.ABSTRACT This paper examines the diachronic development of formal and informal address and reference terms in American English as an effect of democratization using the COHA corpus (1900–2020). In focus are two address/reference terms with especially drastic frequency trends in the timespan investigated: the honorific sir, which declines sharply from ...
Hanna Bruns, Svenja Kranich
wiley +1 more source
Some results related to the slide decomposition of Schubert polynomials [PDF]
The expansion of a Schubert polynomial into slide polynomials corresponds to a sum over sub-balls in the subword complex. There has been recent interest in other, coarser, expansions of Schubert polynomials.
Bååth, Thomas
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Zero-one Schubert polynomials [PDF]
, 2020 We prove that if σ∈Sm is a pattern of w∈Sn, then we can express the Schubert polynomial w as a monomial times σ (in reindexed variables) plus a polynomial with nonnegative coefficients. This implies that the set of permutations whose Schubert polynomials
St. Dizier, A, Fink, A, Mészáros, K
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On the maximum likelihood degree of Gaussian graphical models
Bulletin of the London Mathematical Society, Volume 58, Issue 10, October 2026.Abstract In this paper we revisit the likelihood geometry of Gaussian graphical models. We give a detailed proof that the ML‐degree behaves monotonically on induced subgraphs. Furthermore, we complete a missing argument that the ML‐degree of the nth$n{\rm th}$ cycle is larger than 1 for any n⩾4$n\geqslant 4$, therefore completing the characterization ...
Carlos Améndola +3 more
wiley +1 more source
Sharp restriction estimates for some degenerate higher codimensional quadratic surfaces
Journal of the London Mathematical Society, Volume 114, Issue 4, October 2026.Abstract The Fourier restriction conjecture is a fundamental problem in harmonic analysis. In this paper, we investigate restriction estimates for degenerate higher codimensional quadratic surfaces and obtain sharp results for some types of degenerate cases.
Zhenbin Cao, Changxing Miao, Yixuan Pang
wiley +1 more source
Management of cover crops and soil amendments affect yield outcomes during organic transition
Agronomy Journal, Volume 118, Issue 5, September/October 2026.Abstract This study sought to assess the impact of cover cropping and high rates of soil amendments on crop yield during organic transition. Compost, biochar, or a “50/50” mixture of the two on a C‐equivalent basis were applied at a rate of 8 Mg C ha−1 per varying application regimens, with and without cover crops, at two locations on the North ...
Fred Teasley +5 more
wiley +1 more source
A bijective proof of Kohnert's rule for Schubert polynomials [PDF]
, 2020 Kohnert proposed the first monomial positive formula for Schubert polynomials as the generating polynomial for certain unit cell diagrams obtained from the Rothe diagram of a permutation.
Assaf, Sami H.
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The Anatomical Record, Volume 309, Issue 9, Page 2442-2454, September 2026.Abstract Dental microwear texture analysis (DMTA) has become a well‐established method for dietary inference and reconstruction in both extant and extinct mammals and other tetrapods. As the volume of available data continues to grow, researchers could benefit from combining published data from various studies to perform meta‐analyses.
Daniela E. Winkler, Mugino O. Kubo
wiley +1 more source