Search results for "Connected components"
showing 3 items of 3 documents
On Hurwitz spaces of coverings with one special fiber
2009
Let X X' Y be a covering of smooth, projective complex curves such that p is a degree 2 etale covering and f is a degree d covering, with monodromy group Sd, branched in n + 1 points one of which is a special point whose local monodromy has cycle type given by the partition e = (e1,...,er) of d. We study such coverings whose monodromy group is either W(Bd) or wN(W(Bd))(G1)w-1 for some w in W(Bd), where W(Bd) is the Weyl group of type Bd, G1 is the subgroup of W(Bd) generated by reflections with respect to the long roots ei - ej and N(W(Bd))(G1) is the normalizer of G1. We prove that in both cases the corresponding Hurwitz spaces are not connected and hence are not irreducible. In fact, we s…
Separation properties of continuous maps in codimension 1 and geometrical applications
1992
Abstract Nuno Ballesteros, J.J. and M.C. Romero Fuster, Separation properties of continuous maps in codimension 1 and geometrical applications, Topology and its Applications 46 (1992) 107-111. We show that the image of a proper closed continuous map, f , from an n -manifold X to an ( n + 1)-manifold Y , such that H 1 (Y; Z 2 ) =0 , separates Y into at least two connected components provided the self-intersections set of f is not dense in any connected component of Y . We also obtain some geometrical applications.
Kustīgu objektu noteikšana
2015
Programma ir paredzēta video analīzei, kustīgu objektu atpazīšanai un uzskaitei. Programma spēj darboties reāllaikā, analizējot jau ierakstītu video materiālu vai materiālu no tīmekļa kameras. Lietotājam ir dotas iespējas mainīt vairākas iestatījumu vērtības, kuras tiek izmantotas video apstrādē, piemēram, mainīt minimālo izmēru objektu atpazīšanai priekšplāna maskā, noteikt robežas izmēru, kādā pikseļu vērtības tiek uzskatītas par fonu. Šis dokuments satur programmatūras prasību specifikāciju, programmatūras projektējuma aprakstu, testēšanas dokumentāciju, kā arī citu svarīgu informāciju par programmu.