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Related papers: Log Adjunction: effectiveness and positivity

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We develop new techniques for constructing model structures from a given class of cofibrations, together with a class of fibrant objects and a choice of weak equivalences between them. As a special case, we obtain a more flexible version of…

Algebraic Topology · Mathematics 2026-01-23 Léonard Guetta , Lyne Moser , Maru Sarazola , Paula Verdugo

We establish a kind of subadjunction formula for quasi-log canonical pairs. As an application, we prove that a connected projective quasi-log canonical pair whose quasi-log canonical class is anti-ample is simply connected and rationally…

Algebraic Geometry · Mathematics 2020-09-02 Osamu Fujino

We prove inversion of adjunction on log canonicity.

Algebraic Geometry · Mathematics 2009-11-11 Masayuki Kawakita

We extend the conjecture on the derived equivalence and K-equivalence to the logarithmic case and prove it in the toric case.

Algebraic Geometry · Mathematics 2007-05-23 Yujiro Kawamata

We first announce our recent result on adjunction and inversion of adjunction. Then we clarify the relationship between our inversion of adjunction and Hacon's inversion of adjunction for log canonical centers of arbitrary codimension.

Algebraic Geometry · Mathematics 2021-07-13 Osamu Fujino , Kenta Hashizume

We prove the modularity of a positive proportion of abelian surfaces over $\mathbf{Q}$. More precisely, we prove the modularity of abelian surfaces which are ordinary at $3$ and are $3$-distinguished, subject to some assumptions on the…

Number Theory · Mathematics 2025-03-03 George Boxer , Frank Calegari , Toby Gee , Vincent Pilloni

We use the theory of motivic integration for singular spaces to give a characterization of minimal log discrepencies in terms of the codimension of certain subsets of spaces of arcs. This is done for arbitrary pairs $(X,Y)$, with $X$ normal…

Algebraic Geometry · Mathematics 2009-11-07 Lawrence Ein , Mircea Mustata , Takehiko Yasuda

We establish discrete and continuous log-concavity results for a biparametric extension of the $q$-numbers and of the $q$-binomial coefficients. By using classical results for the Jacobi theta function we are able to lift some of our…

Classical Analysis and ODEs · Mathematics 2020-08-12 Michael J. Schlosser , Koushik Senapati , Ali K. Uncu

We prove a recent conjecture of Lassalle about positivity and integrality of coefficients in some polynomial expansions. We also give a combinatorial interpretation of those numbers. Finally, we show that this question is closely related to…

Combinatorics · Mathematics 2007-05-23 F. Jouhet , B. Lass , J. Zeng

It is known that the so-called monadic decomposition, applied to the adjunction connecting the category of bialgebras to the category of vector spaces via the tensor and the primitive functors, returns the usual adjunction between…

Category Theory · Mathematics 2021-02-15 Alessandro Ardizzoni , Claudia Menini

Capretta's delay monad can be used to model partial computations, but it has the "wrong" notion of built-in equality, strong bisimilarity. An alternative is to quotient the delay monad by the "right" notion of equality, weak bisimilarity.…

Logic in Computer Science · Computer Science 2017-06-28 Thorsten Altenkirch , Nils Anders Danielsson , Nicolai Kraus

We propose a relationship between the cohomology of arithmetic groups, and the motivic cohomology of certain (Langlands-)attached motives. The motivic cohomology group in question is that related, by Beilinson's conjecture, to the adjoint…

Number Theory · Mathematics 2017-01-16 Kartik Prasanna , Akshay Venkatesh

We introduce a direct image formalism for constructible motivic functions. One deduces a very general version of motivic integration for which a change of variables theorem is proved. These constructions are generalized to the relative…

Algebraic Geometry · Mathematics 2008-05-29 R. Cluckers , F. Loeser

We present the notions of positively complete theory and general forms of amalgamation in the framework of positive logic. We explore the fundamental properties of positively complete theories and study the behaviour of companion theories…

Logic · Mathematics 2019-11-15 Mohammed Belkasmi

We establish adjunction and inversion of adjunction for log canonical centers of arbitrary codimension in full generality.

Algebraic Geometry · Mathematics 2022-08-17 Osamu Fujino , Kenta Hashizume

We investigate effectiveness and ampleness of adjoint divisors of the form $aL+bK_X$, where $L$ is a suitably positive line bundle on a smooth projective variety $X$ and $a,b$ are positive integers.

Algebraic Geometry · Mathematics 2022-10-04 Camilla Felisetti , Claudio Fontanari

We provide the first (non-labelled) sequent calculi for bimodal provability logics with "usual" provability predicates. In particular, we introduce calculi for the logics CS, CSM and ER. Additionally, we present non-wellfounded versions of…

Logic · Mathematics 2026-05-15 Borja Sierra Miranda , Thomas Studer

We added an additional result (theorem 1.6) that strengthenns our main theorem in the G=GL-case by establishing an equivalence of tensor categories.

alg-geom · Mathematics 2008-02-03 Vladimir Baranovsky , Victor Ginzburg

We propose a variant of the effective adjunction conjecture for lc-trivial fibrations. This variant is suitable for inductions and can be used to treat real coefficients.

Algebraic Geometry · Mathematics 2020-07-09 Zhan Li

In this paper, we get an elementary and important lemma(See Lemma 3.2) which is about pushout and pullback of modules. And we prove a weak form of a long open conjecture on vanishing of group cohomology for blocks.

Group Theory · Mathematics 2021-03-26 Heguo Liu , Xingzhong Xu , Jiping Zhang