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不変量と変形とモジュライ空間 - 2026/9/15の論文53本
プレプリどんどん: math.AG · 15 сентября 2026 г. · 1 ч 31 мин
arXiv math.AGの新着論文53本をご紹介します。 番組ページ: https://prepridondon.nyoho.jp/channels/math-ag/episodes/2026-09-15/ Stringy invariants for abelian character varieties Degrees of Fano Quiver Moduli A Log Canonical Counterexample to the Chen--Jiang Decomposition Extensions and Segre stratifications over algebraic surfaces Contact Rigidity and Comparison Kernels for Type A lci Schubert Varieties Conifold Gap for the Quintic Threefold The cylinder over the Russell cubic threefold is flexible Motivic Steenrod algebra and Thom obstructions without desingularization Theta-duality and Prym-Torelli for cyclic covers of hyperelliptic curves Discriminants of Hermitian forms, maximal degenerations and Kontsevich's tropical approach to the Hodge conjecture Torelli theorems for Quot schemes of vector bundles on curves Holomorphic polyvector fields on toric varieties via Klyachko filtrations Deformation invariance of canonical nefness in smooth Kahler morphisms Blow-up formulas of Gromov-Witten invariants and virtual cycles under positivity conditions Nagata's conjecture on a polynomial automorphism in positive characteristic Phantom subcategories on blow-ups of Hirzebruch surfaces Lagrangian fibrations on hyperkahler manifolds have no multiple fibers in codimension one An arithmetic integrability result for codimension-one foliations on complex projective spaces Nakajima-extremal Artin--Schreier covers of ordinary elliptic curves in characteristic $2$ Level structures on tropical abelian varieties Geometric Invariant Theory for Affine Superschemes Riemann-Roch Polynomials, MBM Classes and Poor IHS Manifolds Torsion, Betti rank, and small points in semiabelian schemes Ulrich Bundles on certain Grassmann Bundles Over Curves Asymptotic Counting of Singular Fibers of Genus $g$ Noether's problem for $A_6$ and $A_7$ An algebraic comparison of $\widehat{\mathrm K}$-stability and $\mathrm K^\beta$-stability Generic vanishing subschemes of codimension three Harmonic sums and the Galois group of the Mellin-KZ difference equation Polarized varieties without arithmetically Cohen-Macaulay bundles and section rings without graded maximal Cohen-Macaulay modules in characteristic zero Small-Subgroup Criteri