Results 101 to 110 of about 1,167,226 (217)
An hp-version discontinuous Galerkin method for integro-differential equations of parabolic type [PDF]
, 2011 We study the numerical solution of a class of parabolic integro-differential equations with weakly singular kernels. We use an $hp$-version discontinuous Galerkin (DG) method for the discretization in time.
H. Mustapha +7 more
core +2 more sources
Subgroup separability, knot groups, and graph manifolds
, 2001 This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T., Niblo, Graham A.
core
Inhomogeneous parabolic equations on unbounded metric measure spaces [PDF]
, 2012 We study the inhomogeneous semilinear parabolic equation ut = Δu + up + f(x), with source term f independent of time and subject to f(x) ≥ 0 and with u(0, x) = φ(x) ≥ 0, for the very general setting of a metric measure space. By establishing Harnack-type
Hu, Jiaxin +5 more
core +1 more source
Latin American Journal of Sedimentology and Basin Analysis, 2008 Se estudió una sucesión sedimentaria que aflora en el sudeste de la Cuenca Neuquina, en el departamento El Cuy (Río Negro). La misma incluye a las formaciones Huincul y Lisandro que integran el Subgrupo Río Limay (Grupo Neuquén), y han sido asignadas al ...
M. L. Sánchez +3 more
doaj
On the structure of parabolic subgroups
Bulletin of the Belgian Mathematical Society - Simon Stevin, 2005 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +3 more sources
Subgroup separability, knot groups, and graph manifolds
, 2000 This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T. +3 more
core
On centralizers of parabolic subgroups in Coxeter groups [PDF]
jgth, 2011 Abstract Let W be an arbitrary Coxeter group, possibly of infinite rank. We describe a decomposition of the centralizer ZW (WI ) of an arbitrary parabolic subgroup WI into the center of WI , a Coxeter group and a subgroup defined by a 2-cell complex.
openaire +2 more sources
On the Structure of Parabolic Subgroups in Algebraic Groups
Journal of Algebra, 1993 This paper is related to the author's earlier work together with \textit{R. Richardson} and \textit{R. Steinberg} [Invent. Math. 110, 649-671 (1992; Zbl 0786.20029)]. It gives a precise description of the orbits of a Levi subgroup on the lower central series of the unipotent radical of a parabolic group with Levi complement \(L\).
openaire +1 more source
On Normal Subgroups of Coxeter Groups Generated by Standard Parabolic Subgroups [PDF]
Geometriae Dedicata, 2005 We discuss one construction of nonstandard subgroups in the category of Coxeter groups. Two formulae for the growth series of such a subgroups are given. As an application we construct a flag simple convex polytope, whose f-polynomial has non-real roots.
openaire +2 more sources
The Plancherel Formula for Minimal Parabolic Subgroups
Journal of Lie Theory, 2014 This version corrects some typographical errors, regularizes some notation, adds a few references and some expository material, and fixes one incorrect ...
openaire +3 more sources