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- Institució Catalana de Recerca i Estudis AvançatsES14 papers
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17 papers · 1 filter
Z_2-gradings of Clifford algebras and multivector structures
Ricardo A. Mosna, David Miralles, Jayme Vaz
Let Cl(V,g) be the real Clifford algebra associated to the real vector space V, endowed with a nondegenerate metric g. In this paper, we study the class of Z_2-gradings of Cl(V,g)…
Many Triangulated 3-Spheres
Julian Pfeifle, Günter M. Ziegler
We construct 2^{Ω(n^{5/4})} combinatorial types of triangulated 3-spheres on n vertices. Since by a result of Goodman and Pollack (1986) there are no more than 2^{O(n log n)} combi…
Optical Photometry of GRB 021004: The First Month
Stephen T. Holland, Michael Weidinger, Johan P. U. Fynbo +17
We present U,B,V,R_C,and I_C photometry of the optical afterglow of the gamma-ray burst GRB 021004 taken at the Nordic Optical Telescope between approximately eight hours and 30 da…
Chiral dynamics in systems with strangeness
E. Oset, D. Jido, J. Palomar +3
In this talk a brief review of several problems involving systems with strangeness is made. In the first place one shows how the , and states, for $S =…
Statistics of lowest droplets in two-dimensional Gaussian Ising spin glasses
Picco Marco, Ritort Felix, Sales Marta
A new approach to determine the value of the zero-temperature thermal exponent theta in spin glasses is presented. It consists in describing the energy level spectrum in spin glass…
Confirmation of persistent radio jets in the microquasar LS 5039
J. M. Paredes, M. Ribo, E. Ros +2
We present here new observations conducted with the EVN and MERLIN of the persistent microquasar LS 5039 discovered by Paredes et al. (2000) with the VLBA. The new observations con…