Now showing items 1500-1519 of 1954

    • The Periodic Tables of Algebraic Geometry 

      [SNAP-2023-002-EN] Belmans, Pieter (Mathematisches Forschungsinstitut Oberwolfach, 2023-09-04)
      To understand our world, we classify things. A famous example is the periodic table of elements, which describes the properties of all known chemical elements and gives us a classification of the building blocks we can use ...
    • 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 ...
    • 0723 - Phase Transitions 

      [OWR-2007-28] (2007) - (03 Jun - 09 Jun 2007)
      As in the past, the workshop brought together researchers with a background in physics, partial differential equations and continuum mechanics and statistical mechanics. Equilibrium and dynamic phase transitions were ...
    • 1022 - Phase Transitions 

      [OWR-2010-24] (2010) - (30 May - 05 Jun 2010)
      Phase transitions are common phenomena which occur in many fields of material sciences. Models of phase transitions in diverse physical systems often lead to ill-posed mathematical problems whose solutions are characterized ...
    • 0426 - Phasenübergänge 

      [OWR-2004-30] (2004) - (20 Jun - 26 Jun 2004)
    • 0118 - Phasenübergänge 

      [TB-2001-19] (2001) - (29 Apr - 05 May 2001)
    • Photonic Crystals: Mathematical Analysis and Numerical Approximation 

      [OWS-42] Dörfler, Willy; Lechleiter, Armin; Plum, Michael; Schneider, Guido; Wieners, Christian (Birkhäuser Basel, 2011)
      This volume collects a series of lectures which provide an introduction to the mathematical background needed for the modeling and simulation of light, in particular in periodic media, and for its applications in optical ...
    • Plethysms, replicated Schur functions and series, with applications to vertex operators 

      [OWP-2010-12] Fauser, Bertfried; Jarvis, Peter D.; King, Ronald C. (Mathematisches Forschungsinstitut Oberwolfach, 2010-03-14)
      Specializations of Schur functions are exploited to define and evaluate the Schur functions $s_\lambda [\alpha X]$ and plethysms $s_\lambda [\alpha s_\nu(X))]$ for any $\alpha$-integer, real or complex. Plethysms are then ...
    • Plethystic Vertex Operators and Boson-Fermion Correspondences 

      [OWP-2016-11] Fauser, Bertfried; Jarvis, Peter D.; King, Ronald C. (Mathematisches Forschungsinstitut Oberwolfach, 2016-06-17)
      We study the algebraic properties of plethystic vertex operators, introduced in J. Phys. A: Math. Theor. 43 405202 (2010), underlying the structure of symmetric functions associated with certain generalized universal ...
    • Pointwise hyperbolicity implies uniform hyperbolicity 

      [OWP-2009-06] Hasselblatt, Boris; Pesin, Yakov B.; Schmeling, Jörg (Mathematisches Forschungsinstitut Oberwolfach, 2009-02-23)
      We provide a general mechanism for obtaining uniform information from pointwise data. A sample result is that if a diffeomorphism of a compact Riemannian manifold has pointwise expanding and contracting continuous invariant ...
    • 0718a - Poisson Geometry and Applications 

      [OWR-2007-23] (2007) - (29 Apr - 05 May 2007)
      This workshop concentrated on some of the major areas of Poisson geometry and its applications. Topics covered included moment maps, global Poisson geometry (Poisson-Lie groups, homogeneous spaces), Poisson topology ...
    • Polyhedra and commensurability 

      [SNAP-2016-009-EN] Guglielmetti, Rafael; Jacquement, Matthieu (Mathematisches Forschungsinstitut Oberwolfach, 2016)
      This snapshot introduces the notion of commensurability of polyhedra. At its bottom, this concept can be developed from constructions with paper, scissors, and glue. Starting with an elementary example, we formalize it ...
    • Polynomiality, wall crossings and tropical geometry of rational double hurwitz cycles 

      [OWP-2012-13] Bertram, Aaron; Cavalieri, Renzo; Markwig, Hannah (Mathematisches Forschungsinstitut Oberwolfach, 2012-12-04)
      We study rational double Hurwitz cycles, i.e. loci of marked rational stable curves admitting a map to the projective line with assigned ramification profiles over two fixed branch points. Generalizing the phenomenon ...
    • Polytopes - combinatorics and computation 

      [OWS-29] Kalai, Gil; Ziegler, Günter M. (Birkhäuser Basel, 2000)
      Questions that arose from linear programming and combinatorial optimization have been a driving force for modern polytope theory, such as the diameter questions motivated by the desire to understand the complexity of the ...
    • 2210 - Population Dynamics and Statistical Physics in Synergy 

      [OWR-2022-12] (2022) - (06 Mar - 12 Mar 2022)
      Research at the interface between population dynamics and statistical physics has been developing rapidly, and represents a theme of growing interest worldwide. Population dynamics addresses fundamental questions about the ...
    • Positional Games 

      [OWS-44] Hefetz, Dan; Krivelevich, Michael; Stojaković, Miloš; Szabó, Tibor (Birkhäuser Basel, 2014)
      This text is based on a lecture course given by the authors in the framework of Oberwolfach Seminars at the Mathematisches Forschungsinstitut Oberwolfach in May, 2013. It is intended to serve as a thorough introduction to ...
    • Positive Line Bundles Over the Irreducible Quantum Flag Manifolds 

      [OWP-2020-01] Díaz García, Fredy; Krutov, Andrey; Ó Buachalla, Réamonn; Somberg, Petr; Strung, Karen R. (Mathematisches Forschungsinstitut Oberwolfach, 2020-02-03)
      Noncommutative Kähler structures were recently introduced by the third author as a framework for studying noncommutative Kähler geometry on quantum homogeneous spaces. It was subsequently observed that the notion of a ...
    • Positive Margins and Primary Decomposition 

      [OWP-2012-06] Kahle, Thomas; Rauh, Johannes; Sullivant, Seth (Mathematisches Forschungsinstitut Oberwolfach, 2012)
      We study random walks on contingency tables with fixed marginals, corresponding to a (log-linear) hierarchical model. If the set of allowed moves is not a Markov basis, then there exist tables with the same marginals that ...
    • Positive recurrence of piecewise Orntein-Uhlenbeck processes and common quadratic Lyapunov functions 

      [OWP-2011-26] Dieker, A. B.; Gao, Xuefeng (Mathematisches Forschungsinstitut Oberwolfach, 2011)
      We study the positive recurrence of piecewise Ornstein-Uhlenbeck (OU) diffusion processes, which arise from many-server queueing systems with phase-type service requirements. These diffusion processes exhibit different ...
    • Positive Scalar Curvature and Applications 

      [SNAP-2019-004-EN] Rosenberg, Jonathan; Wraith, David (Mathematisches Forschungsinstitut Oberwolfach, 2019-04-25)
      We introduce the idea of curvature, including how it developed historically, and focus on the scalar curvature of a manifold. A major current research topic involves understanding positive scalar curvature. We discuss why ...