Now showing items 1-20 of 30

• #### 0720 - Arithmetic and Differential Galois Groups ﻿

[OWR-2007-26] (2007) - (13 May - 19 May 2007)
Galois theory is the study of symmetries in solution spaces of polynomial and differential equations and more generally of the relation between automorphism groups (or group schemes respectively) and the structure of ...
• #### 1643 - Definability and Decidability Problems in Number Theory ﻿

[OWR-2016-49] (2016) - (23 Oct - 29 Oct 2016)
This workshop brought together experts working on variations of Hilbert’s Tenth Problem and more general decidability issues for structures other than the ring of integers arising naturally in number theory and algebraic geometry.
• #### Dominance and Transmissions in Supertropical Valuation Theory ﻿

[OWP-2011-07] (Mathematisches Forschungsinstitut Oberwolfach, 2011)
This paper is a sequel of [IKR1], where we defined supervaluations on a commutative ring $R$ and studied a dominance relation $\Phi >= v$ between supervaluations $\varphi$ and $\upsilon$ on $R$, aiming at an enrichment of ...
• #### 0929 - Explicit Methods in Number Theory ﻿

[OWR-2009-33] (2009) - (12 Jul - 18 Jul 2009)
These notes contain extended abstracts on the topic of explicit methods in number theory. The range of topics includes asymptotics for ﬁeld extensions and class numbers, random matrices and L-functions, rational points on ...
• #### 0529 - Explicit Methods in Number Theory ﻿

[OWR-2005-32] (2005) - (17 Jul - 23 Jul 2005)
These notes contain extended abstracts on the topic of explicit methods in number theory. The range of topics included modular forms, varieties over finite fields, rational and integral points on varieties, class groups, ...
• #### 0729 - Explicit Methods in Number Theory ﻿

[OWR-2007-34] (2007) - (15 Jul - 21 Jul 2007)
These notes contain extended abstracts on the topic of explicit methods in number theory. The range of topics includes asymptotics for field extensions and class numbers, random matrices and L-functions, rational points ...
• #### 1329 - Explicit Methods in Number Theory ﻿

[OWR-2013-35] (2013) - (14 Jul - 20 Jul 2013)
These notes contain extended abstracts on the topic of explicit methods in number theory. The range of topics includes effectiveness in rational points on curves and especially on modular curves, modularity, L-functions, ...
• #### 1129 - Explicit Methods in Number Theory ﻿

[OWR-2011-35] (2011) - (17 Jul - 23 Jul 2011)
These notes contain extended abstracts on the topic of explicit methods in number theory. The range of topics includes the Sato-Tate conjecure, Langlands programme, function fields, L-functions and many other topics.
• #### 1528 - Explicit Methods in Number Theory ﻿

[OWR-2015-32] (2015) - (05 Jul - 11 Jul 2015)
The aim of the series of Oberwolfach meetings on ‘Explicit methods in number theory’ is to bring together people attacking key problems in number theory via techniques involving concrete or computable descriptions. Here, ...
• #### 1823a - Field Arithmetic ﻿

[OWR-2018-25] (2018) - (03 Jun - 09 Jun 2018)
Field Arithmetic studies the interrelation between arithmetic properties of fields and their absolute Galois groups. It is an interdisciplinary area that uses methods of algebraic number theory, commutative algebra, algebraic ...
• #### 1406a - Langlands Correspondence and Constructive Galois Theory ﻿

[OWR-2014-5] (2014) - (02 Feb - 08 Feb 2014)
Recent progress in the Langlands programm provides a significant step towards the understanding of the arithmetic of global fields. The geometric Langlands program provides a systematic way to construct l-adic sheaves ...
• #### 1816a - Mini-Workshop: Arithmetic Geometry and Symmetries around Galois and Fundamental Groups ﻿

[OWR-2018-17] (2018) - (15 Apr - 21 Apr 2018)
The geometric study of the absolute Galois group of the rational numbers has been a highly active research topic since the first milestones: Hilbert’s Irreducibility Theorem, Noether’s program, Riemann’s Existence Theorem. ...
• #### 1651c - Mini-Workshop: Surreal Numbers, Surreal Analysis, Hahn Fields and Derivations ﻿

[OWR-2016-60] (2016) - (18 Dec - 23 Dec 2016)
New striking analogies between H. Hahn’s fields of generalised series with real coefficients, G. H. Hardy’s field of germs of real valued functions, and J. H. Conway’s field No of surreal numbers, have been lately discovered ...
• #### 0703 - Model Theory and Groups ﻿

[OWR-2007-2] (2007) - (14 Jan - 20 Jan 2007)
The aim of the workshop was to discuss the connections between model theory and group theory. Main topics have been the interaction between geometric group theory and model theory, the study of the asymptotic behaviour of ...
• #### 1001 - Model Theory: Around Valued Fields and Dependent Theories ﻿

[OWR-2010-1] (2010) - (03 Jan - 09 Jan 2010)
The general topic of the meeting was “Valued fields and related structures”. It included both applications of model theory, as well as so-called “pure” model theory: the classification of first order structures using new ...
• #### Monoid valuations and value ordered supervaluations ﻿

[OWP-2011-17] (Mathematisches Forschungsinstitut Oberwolfach, 2011)
We complement two papers on supertropical valuation theory ([IKR1], [IKR2]) by providing natural examples of m-valuations (= monoid valuations), after that of supervaluations and transmissions between them. The supervaluations ...
• #### 1245a - Non-Archimedean Analytic Geometry ﻿

[OWR-2012-53] (2012) - (04 Nov - 10 Nov 2012)
The workshop focused on recent developments in non-Archimedean analytic geometry with various applications to arithmetic and algebraic geometry. These applications include questions in Arakelov theory, p-adic differential ...
• #### 0732 - Permutation Groups ﻿

[OWR-2007-37] (2007) - (05 Aug - 11 Aug 2007)
Abstract. The theory of permutation groups is essentially the theory of symmetry for mathematical and physical systems, and therefore has major impact in diverse areas of mathematics. Recent significant advances in permutation ...
• #### 0920 - Quadratic Forms and Linear Algebraic Groups ﻿

[OWR-2009-25] (2009) - (10 May - 16 May 2009)
Topics discussed at the workshop Quadratic forms and linear algebraic groups included besides the algebraic theory of quadratic and Hermitian forms and their Witt groups several aspects of the theory of linear algebraic ...
• #### 0626 - Quadratic Forms and Linear Algebraic Groups ﻿

[OWR-2006-29] (2006) - (25 Jun - 01 Jul 2006)
Topics discussed at the Oberwolfach workshop Quadratic Forms and Linear Algebraic Groups, held in June 2006, included besides the algebraic theory of quadratic and Hermitian forms and their Witt groups several aspects of ...