Nested varieties of K3 type

M Bernardara, E Fatighenti, L Manivel - Journal de l'École …, 2021 - numdam.org
In this paper, we study and relate Calabi-Yau subHodge structures of Fano subvarieties of
different Grassmannians. In particular, we construct isomorphisms between Calabi-Yau …

Semi-orthogonal decomposition of symmetric products of curves and canonical system

I Biswas, T Gómez, KS Lee - Revista matemática iberoamericana, 2021 - ems.press
Let C be an irreducible smooth complex projective curve of genus g≥ 2 and let Cd be its d-
fold symmetric product. In this paper, we study the question of semi-orthogonal …

Generalized L\" uroth problems, hierarchized I: SBNR--stably birationalized unramified sheaves and lower retract rationality

N Minami - arXiv preprint arXiv:2210.12225, 2022 - arxiv.org
This is the first of a series of papers, where we investigate hierarchies of generalized {L}\"{u}
roth problems on the hierarchy of rationality, starting with the obvious hierarchy between the …

[HTML][HTML] Motivic cohomology and K-theory of some surfaces over finite fields

O Gregory - Journal of Pure and Applied Algebra, 2024 - Elsevier
We compute the algebraic K-theory of some classes of surfaces defined over finite fields. We
achieve this by first calculating the motivic cohomology groups and then studying the motivic …

Indecomposability of derived categories in families

F Bastianelli, P Belmans, S Okawa… - arXiv preprint arXiv …, 2020 - arxiv.org
Using the moduli space of semiorthogonal decompositions in a smooth projective family
introduced by the second, the third and the fourth author, we discuss indecomposability …

Classification of full exceptional collections of line bundles on three blow-ups of

W Liu, S Yang, X Yu - arXiv preprint arXiv:1810.06367, 2018 - arxiv.org
A fullness conjecture of Kuznetsov says that if a smooth projective variety $ X $ admits a full
exceptional collection of line bundles of length $ l $, then any exceptional collection of line …

Non-existence of exceptional collections on twisted flags and categorical representability via noncommutative motives

S Novaković - arXiv preprint arXiv:1607.01043, 2016 - arxiv.org
In this paper we prove that a finite product of Brauer--Severi varieties is categorical
representable in dimension zero if and only if it admits a $ k $-rational point if and only if it is …

No phantoms in the derived category of curves over arbitrary fields, and derived characterizations of Brauer-Severi varieties

S Novaković - arXiv preprint arXiv:1701.03020, 2017 - arxiv.org
In this paper we show that the derived category of Brauer-Severi curves satisfies the Jordan-
H\" older property and cannot have quasi-phantoms, phantoms or universal phantoms. In …

Motivic cohomology and algebraic -theory of some surfaces over finite fields

O Gregory - arXiv preprint arXiv:2302.09867, 2023 - arxiv.org
We compute the algebraic $ K $-theory of some classes of surfaces defined over finite fields.
We achieve this by first calculating the motivic cohomology groups and then studying the …

ATV's for (Geometric) Off-roading: A Gentle Introduction to Arithmetic Toric Varieties

PK McFaddin - NOTICES OF THE AMERICAN MATHEMATICAL …, 2022 - ams.org
A fundamental problem in mathematics is how to determine whether a given finite collection
of polynomials has a common solution, and how to quantify and qualify the shape of this …