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  • We show a general method of construction of non-.sigma.-porous sets in complete metric spaces. This method enables us to answer several open questions. We prove that each non-.sigma.-porous Suslin subset of a topologically complete metric space contains a non-.sigma.-porous closed subset. We show also a sufficient consition, which gives that a certain system of compact sets contains a non-.sigma.-porous element.
  • We show a general method of construction of non-.sigma.-porous sets in complete metric spaces. This method enables us to answer several open questions. We prove that each non-.sigma.-porous Suslin subset of a topologically complete metric space contains a non-.sigma.-porous closed subset. We show also a sufficient consition, which gives that a certain system of compact sets contains a non-.sigma.-porous element. (en)
  • Je ukázána obecná metoda konstrukce množin, které nejsou sigma-porézní v úplných metrických prostorech. Metoda dává odpověď na několik otevřených problémů. (cs)
Title
  • The structure of the .sigma.-ideal of .sigma.-porous sets
  • Struktura sigma-ideálu sigma-porézních množin (cs)
  • The structure of the .sigma.-ideal of .sigma.-porous sets (en)
skos:prefLabel
  • The structure of the .sigma.-ideal of .sigma.-porous sets
  • Struktura sigma-ideálu sigma-porézních množin (cs)
  • The structure of the .sigma.-ideal of .sigma.-porous sets (en)
skos:notation
  • RIV/67985840:_____/04:00106833!RIV/2005/GA0/A05005/N
http://linked.open.../vavai/riv/strany
  • 37;72
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA201/00/1466), P(GA201/97/0216), P(GA201/97/1161), P(KSK1019101), Z(AV0Z1019905), Z(MSM 113200007)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 588539
http://linked.open...ai/riv/idVysledku
  • RIV/67985840:_____/04:00106833
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • .sigma. proposity;descriptive set theory;.sigma.-ideal (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [4119275F184B]
http://linked.open...i/riv/nazevZdroje
  • Commentationes Mathematicae Universitatis Carolinae
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 45
http://linked.open...iv/tvurceVysledku
  • Pelant, Jan
  • Zelený, M.
http://linked.open...n/vavai/riv/zamer
number of pages
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