Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Ralf Gramlich"'
Publikováno v:
Israel Journal of Mathematics. 177:49-101
We study final group topologies and their relations to compactness properties. In particular, we are interested in situations where a colimit or direct limit is locally compact, a kω-space, or locally kω. As a first application, we show that unitar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ab060aca0eb8fdaee0b13085e774073
https://doi.org/10.1007/s11856-010-0038-5
https://doi.org/10.1007/s11856-010-0038-5
Publikováno v:
advg. 10:505-526
Based on the first author's diploma thesis [Kurth, On a real form of E 6 and its related generalized quadrangle, 2000] we use the theories of Lie groups and of Tits buildings in order to describe a Veronese embedding of the real quadrangle of type E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adcf94c1e3e7686833e2389f8b452707
https://doi.org/10.1515/advgeom.2010.015
https://doi.org/10.1515/advgeom.2010.015
Publikováno v:
Journal of Algebraic Combinatorics. 32:1-14
Based on the third author's thesis ( arXiv:0805.2403 ) in this article we complete the local recognition of commuting reflection graphs of spherical Coxeter groups arising from irreducible crystallographic root systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccfabc03c6206b3e4de8835ba31569ab
https://doi.org/10.1007/s10801-009-0201-4
https://doi.org/10.1007/s10801-009-0201-4
Autor:
Kristina Altmann, Ralf Gramlich
Publikováno v:
Journal of Algebraic Combinatorics. 31:547-583
Hans Cuypers (Preprint) describes a characterisation of the geometry on singular points and hyperbolic lines of a finite unitary space--the hyperbolic unitary geometry--using information about the planes. In the present article we describe an alterna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8eb0fedfd5cd1e19312c8f515dc3de4f
https://doi.org/10.1007/s10801-009-0200-5
https://doi.org/10.1007/s10801-009-0200-5
Autor:
Kristina Altmann, Ralf Gramlich
Publikováno v:
advg. 10:77-91
Let n ≥ 7 and let V be an (n + 2)-dimensional vector space endowed with an anisotropic sesquilinear form. In this article we characterise the graph whose vertices are the two-dimensional subspaces of V and in which two vertices are adjacent if and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9da48798ca8699b1c0f75f8877bd4b04
https://doi.org/10.1515/advgeom.2009.033
https://doi.org/10.1515/advgeom.2009.033
Autor:
Ralf Gramlich, Andreas Mars
Publikováno v:
Journal of Algebra. 322(2):554-561
We use the methods developed in [Pierre-Emmanuel Caprace, “Abstract” homomorphisms of split Kac–Moody groups, Mem. Amer. Math. Soc. 198 (2009); Pierre-Emmanuel Caprace, Bernhard Muhlherr, Isomorphisms of Kac–Moody groups, Invent. Math. 161 (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa2b0da9a7ce39e6831aa7356d7c8566
Publikováno v:
Journal of the London Mathematical Society. 79:684-700
We prove that the complex of proper non-trivial non-degenerate subspaces of a finite-dimensional vector space endowed with a non-degenerate sesquilinear form is homotopy equivalent to a wedge of spheres. Additionally, we show that the same is true fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fae57bebed2f78857d1b7ac1c57b7c6c
https://doi.org/10.1112/jlms/jdn088
https://doi.org/10.1112/jlms/jdn088
Autor:
Ralf Gramlich
Publikováno v:
Innov. Incidence Geom. 9, no. 1 (2009), 123-175
Geometric methods in the theory of Chevalley groups and their generalisations have made tremendous advances during the last few decades. Among the most noteworthy and influential of these advances are the systematic application of the concept of amal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51e3d72c8660b4a232028c3e7471ed43
https://doi.org/10.2140/iig.2009.9.123
https://doi.org/10.2140/iig.2009.9.123
Autor:
Ralf Gramlich, Simon Goodwin
Publikováno v:
Oberwolfach Reports. :2985-3028
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efc72812cdb1113e2de8be8b2c2c32fa
https://doi.org/10.4171/owr/2008/53
https://doi.org/10.4171/owr/2008/53
Publikováno v:
Journal of Algebra. 316(2):591-607
In the first part [C. Bennett, R. Gramlich, C. Hoffman, S. Shpectorov, Odd-dimensional orthogonal groups as amalgams of unitary groups. Part 1: General simple connectedness, J. Algebra 312 (2007) 426–444], a characterization of central quotients of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d12f63c987b95bae7f4491093e9944f