Browsing by MSC "03"
Now showing items 120 of 56

The Alternating HalpernMann Iteration for Families of Maps
[OWP202407] (Mathematisches Forschungsinstitut Oberwolfach, 20240715)We generalize the alternating HalpernMann iteration to countably infinite families of nonexpansive maps and prove its strong convergence towards a common fixed point in the general nonlinear setting of Hadamard spaces. ... 
Alternative iterative methods for nonexpansive mappings, rates of convergence and applications
[OWP200919] (Mathematisches Forschungsinstitut Oberwolfach, 2009)Alternative iterative methods for a nonexpansive mapping in a Banach space are proposed and proved to be convergent to a common solution to a fixed point problem and a variational inequality. We give rates of asymptotic ... 
Categorical Linearly Ordered Structures
[OWP201808] (Mathematisches Forschungsinstitut Oberwolfach, 20180426)We prove that for every computable limit ordinal $\alpha$ there exists a computable linear ordering $\mathcal{A}$ which is $\Delta^0_\alpha$categorical and $\alpha$ is smallest such, but nonetheless for every isomorphic ... 
Cocycle Superrigidity and Group Actions on Stably Finite C*Algebras
[OWP201701] (Mathematisches Forschungsinstitut Oberwolfach, 20170117)Let $\Lambda $ be a countably infinite property (T) group, and let $D$ be UHFalgebra of infinite type. We prove that there exists a continuum of pairwise non (weakly) cocycle conjugate, strongly outer actions of $\Lambda ... 
1206  Computability Theory
[OWR20128] (2012)  (05 Feb  11 Feb 2012)Computability is one of the fundamental notions of mathematics, trying to capture the effective content of mathematics. Starting from Gödel’s Incompleteness Theorem, it has now blossomed into a rich area with strong ... 
1802  Computability Theory
[OWR20181] (2018)  (07 Jan  13 Jan 2018)Computability and computable enumerability are two of the fundamental notions of mathematics. Interest in effectiveness is already apparent in the famous Hilbert problems, in particular the second and tenth, and in early ... 
2117  Computability Theory (hybrid meeting)
[OWR202121] (2021)  (25 Apr  01 May 2021)Over the last decade computability theory has seen many new and fascinating developments that have linked the subject much closer to other mathematical disciplines inside and outside of logic. This includes, for instance, ... 
1643  Definability and Decidability Problems in Number Theory
[OWR201649] (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. 
Definable orthogonality classes in accessible categories are small
[OWP201114] (Mathematisches Forschungsinstitut Oberwolfach, 20110515)We lower substantially the strength of the assumptions needed for the validity of certain results in category theory and homotopy theory which were known to follow from Vopenka's principle. We prove that the necessary ... 
2207b  Descriptive Combinatorics, LOCAL Algorithms and Random Processes
[OWR20228] (2022)  (13 Feb  19 Feb 2022)The aim of this miniworkshop was to discover and deepen connections between the fields of descriptive combinatorics, distributed computing and random processes. The common link is played by the socalled local coloring ... 
Dominance and Transmissions in Supertropical Valuation Theory
[OWP201107] (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 ... 
2203  Groups and Dynamics: Topology, Measure, and Borel Structure
[OWR20223] (2022)  (16 Jan  22 Jan 2022)While the subjects of topological dynamics, ergodic theory, and descriptive set theory have long interacted in a variety of profitable ways, recent developments have ushered in a vigorous new phase of interplay between ... 
1949  Groups, Dynamics, and Approximation
[OWR201955] (2019)  (01 Dec  07 Dec 2019)The workshop covered a wide range of topics, with emphasis on Geometric Group Theory, Ergodic Theory and links with Functional Analysis on the one hand and Mathematical Logic on the other. The goal of the workshop was to ... 
2101a  Homogeneous Structures: Model Theory meets Universal Algebra (online meeting)
[OWR20211] (2021)The workshop "Homogeneous Structures: Model Theory meets Universal Algebra'' was centred around transferring recently obtained advances in universal algebra from the finite to the infinite. As it turns out, the notion ... 
1447  Mathematical Logic: Proof theory, Constructive Mathematics
[OWR201452] (2014)  (16 Nov  22 Nov 2014)The workshop “Mathematical Logic: Proof Theory, Constructive Mathematics” was centered around prooftheoretic aspects of current mathematics, constructive mathematics and logical aspects of computational complexity 
1745  Mathematical Logic: Proof Theory, Constructive Mathematics
[OWR201753] (2017)  (05 Nov  11 Nov 2017)The workshop “Mathematical Logic: Proof Theory, Constructive Mathematics” was centered around prooftheoretic aspects of core mathematics and theoretical computer science as well as homotopy type theory and logical aspects ... 
1145  Mathematical Logic: Proof Theory, Constructive Mathematics
[OWR201152] (2011)  (06 Nov  12 Nov 2011)The workshop “Mathematical Logic: Proof Theory, Constructive Mathematics” was centered around prooftheoretic aspects of current mathematics, constructive mathematics and logical aspects of computational complexity. 
0815  Mathematical Logic: Proof Theory, Constructive Mathematics
[OWR200818] (2008)  (06 Apr  12 Apr 2008)The workshop “Mathematical Logic: Proof Theory, Constructive Mathematics” brought together a carefully selected group of mathematicians, computer scientists and logicians in other fields to discus the impact of prooftheoretic ... 
2346  Mathematical Logic: Proof Theory, Constructive Mathematics
[OWR202353] (2023)  (12 Nov  17 Nov 2023)The Workshop "Mathematical Logic: Proof Theory, Constructive Mathematics" focused on prooftheoretic research on the foundations of mathematics, on the extraction of explicit computational content from given proofs in ... 
2046  Mathematical Logic: Proof Theory, Constructive Mathematics (hybrid meeting)
[OWR202034] (2020)  (08 Nov  14 Nov 2020)The Workshop "Mathematical Logic: Proof Theory, Constructive Mathematics" focused on proofs both as formal derivations in deductive systems as well as on the extraction of explicit computational content from given ...