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Viewing higher local fields as ring objects in the category of iterated pro-ind-objects, a definition of open subgroups in Milnor K-groups of the fields is given. The self-duality of the additive group of a higher local field is proved. By…

Number Theory · Mathematics 2009-09-25 Kazuya Kato

Let K be a global field and f in K[X] be a polynomial. We present an efficient algorithm which factors f in polynomial time.

Number Theory · Mathematics 2007-05-23 K. Belabas , M. van Hoeij , J. Klueners , A. Steel

We compare different local-global principles for torsors under a reductive group G defined over a semiglobal field F. In particular if the F-group G s a retract rational F-variety, we prove that the local global principle holds for the…

Algebraic Geometry · Mathematics 2024-11-05 Philippe Gille , Raman Parimala

We discuss local-global principles for the existence of Levi factors (i.e., complements to the unipotent radical) for linear algebraic groups over one-variable function fields. We give examples of disconnected groups that fail the…

Group Theory · Mathematics 2026-03-30 David Harbater , Julia Hartmann , George McNinch

This paper extends the model reduction method by the operator projection to the three-dimensional special relativistic Boltzmann equation. The derivation of arbitrary order moment system is built on our careful study of infinite families of…

Numerical Analysis · Mathematics 2017-05-12 Yangyu Kuang , Huazhong Tang

Following a strategy suggested by Michel--Venkatesh, we study the cubic moment of automorphic $L$-functions on $\operatorname{PGL}_2$ using regularized diagonal periods of products of Eisenstein series. Our main innovation is to produce…

Number Theory · Mathematics 2020-01-10 Paul D. Nelson

We define and investigate a family of local-global principles for fields involving both orderings and p-valuations. This family contains the PAC, PRC and PpC fields and exhausts the class of pseudo classically closed fields. We show that…

Logic · Mathematics 2014-08-20 Arno Fehm

We prove the local-global principle holds for the problem of representations of quadratic forms by quadratic forms, in codimension $\geq 7$. The proof uses the ergodic theory of $p$-adic groups, together with a fairly general observation on…

Number Theory · Mathematics 2009-11-11 Jordan Ellenberg , Akshay Venkatesh

We define and study when a polynomial mapping has a local or global time average. We conjecture that a polynomial f in the complex plane has a time average near a point z if and only if z is eventually mapped into a Siegel-disc of f. We…

Complex Variables · Mathematics 2007-12-03 Han Peters

We establish upper bounds for shifted moments of modular $L$-functions to a fixed modulus as well as quadratic twists of modular $L$-functions under the generalized Riemann hypothesis. Our results are then used to establish bounds for…

Number Theory · Mathematics 2024-12-18 Peng Gao , Liangyi Zhao

In this paper we prove Hasse local-global principle for polynomials with coefficients in Mordell-Weil type groups over number fields like S-units, abelian varieties with trivial ring of endomorphisms and odd algebraic K-theory groups.

Number Theory · Mathematics 2017-09-21 Stefan Barańczuk

We establish a geometric criterion for local microlocal holonomies to be globally regular on the moduli space of Lagrangian fillings. This local-to-global regularity result holds for arbitrary Legendrian links and it is a key input for the…

Symplectic Geometry · Mathematics 2026-02-11 Roger Casals , Wenyuan Li

We show that the computational complexity of Riemann mappings can be bounded by the complexity needed to compute conformal mappings locally at boundary points. As a consequence we get first formally proven upper bounds for…

Computational Complexity · Computer Science 2010-06-03 Robert Rettinger

Let $F$ be a univariate polynomial or rational fraction of degree $d$ defined over a number field. We give bounds from above on the absolute logarithmic Weil height of $F$ in terms of the heights of its values at small integers: we review…

Number Theory · Mathematics 2022-10-11 Jean Kieffer

R. Guralnick (Linear Algebra Appl. 99, 85-96, 1988) proved that two holomorphic matrices on a noncompact connected Riemann surface, which are locally holomorphically similar, are globally holomorphically similar. We generalize this to…

Complex Variables · Mathematics 2017-12-28 Jürgen Leiterer

We investigate the sixth moment of the family of $L$-functions associated to holomorphic modular forms on $GL_2$ with respect to a congruence subgroup $\Gamma_1(q)$. We improve on previous work and obtain an unconditional upper bound of the…

Number Theory · Mathematics 2022-08-15 Joshua Stucky

Basic concepts of higher local fields and topologies on their additive and multiplicative groups are introduced.

Number Theory · Mathematics 2007-05-23 Igor Zhukov

This first part of the paper describes the support of top graded local cohomology modules. As a corrolary one obtains a simple criteria for the vanishing of these modules and also the fact that they have finitely many minimal primes. The…

Commutative Algebra · Mathematics 2007-05-23 Mordechai Katzman , Rodney Y. Sharp

In this paper, we introduce generalized Gorenstein local (GGL) rings. The notion of GGL rings is a natural generalization of the notion of almost Gorenstein rings, which can thus be treated as part of the theory of GGL rings. For a…

Commutative Algebra · Mathematics 2026-01-26 Shiro Goto , Shinya Kumashiro

The Local-to-Global-Principle used in the proof of convexity theorems for momentum maps has been extracted as a statement of pure topology enriched with a structure of convexity. We extend this principle to not necessarily closed maps…

Symplectic Geometry · Mathematics 2012-02-14 Wolfgang Rump , Jenny Santoso