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Components and singularities of Quot schemes and varieties of commuting matricesJelisiejew, Joachim ; Šivic, Klemen, matematikV članku obravnavamo raznoterosti komutirajočih matrik, ki jih povežemo z deformacijami modulov in za ta problem posplošimo več metod: apolarnost, dualnost in Bialynicki-Birulov razcep. Klasificiramo ... komponente omenjenih raznoterosti za poljubno število matrik velikosti največ ▫$7 \times 7$▫. Dokažemo, da je v teh primerih pripadajoča shema generično reducirana, od četveric ▫$8 \times 8$▫ matrik dalje pa ima generično nereducirane komponente. Dobljeni rezultati dajo ustrezne rezultate za Quot sheme točk, na primer klasificiramo komponente sheme ▫$\operatorname{Quot}_d(\mathcal{O}_{\mathbb{A}^n}^{\oplus r})$▫ za ▫$d\leq 7$▫ in vse ▫$r$▫, ▫$n$▫.Source: Journal für die Reine und Angewandte Mathematik. - ISSN 0075-4102 (Vol. 2022, iss. 788, 2022, str. 129-187)Type of material - article, component part ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 117558275
source: Journal für die Reine und Angewandte Mathematik. - ISSN 0075-4102 (Vol. 2022, iss. 788, 2022, str. 129-187)
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Jelisiejew, Joachim | |
Šivic, Klemen, matematik | 28585 |
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