caa a22 4500 445813520 CHVBK 20180317145219.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00022-011-0080-4 doi (NATIONALLICENCE)springer-10.1007/s00022-011-0080-4 On q -analogues and stability theorems [Elektronische Daten] [Aart Blokhuis, Andries Brouwer, Tamás Szőnyi, Zsuzsa Weiner] In this survey recent results about q-analogues of some classical theorems in extremal set theory are collected. They are related to determining the chromatic number of the q-analogues of Kneser graphs. For the proof one needs results on the number of 0-secant subspaces of point sets, so in the second part of the paper recent results on the structure of point sets having few 0-secant subspaces are discussed. Our attention is focussed on the planar case, where various stability results are given. The Author(s), 2011 q -analogues nationallicence Erdős-Ko-Rado theorem nationallicence q -Kneser graph nationallicence chromatic number nationallicence blocking set nationallicence stability results nationallicence Blokhuis Aart Department of Mathematics, Eindhoven University of Technology, P. O. Box 513, 5600MB, Eindhoven, The Netherlands aut Brouwer Andries Department of Mathematics, Eindhoven University of Technology, P. O. Box 513, 5600MB, Eindhoven, The Netherlands aut Szőnyi Tamás Department of Computer Science, Eötvös Loránd University, Pázmány Péter stny. 1/C, 1117, Budapest, Hungary aut Weiner Zsuzsa Department of Computer Science, Eötvös Loránd University, Pázmány Péter stny. 1/C, 1117, Budapest, Hungary aut Journal of Geometry SP Birkhäuser Verlag Basel 101/1-2(2011-08-01), 31-50 0047-2468 101:1-2<31 2011 101 22 https://doi.org/10.1007/s00022-011-0080-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00022-011-0080-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Blokhuis Aart Department of Mathematics, Eindhoven University of Technology, P. O. Box 513, 5600MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- Brouwer Andries Department of Mathematics, Eindhoven University of Technology, P. O. Box 513, 5600MB, Eindhoven, The Netherlands aut NATIONALLICENCE 700 1- Szőnyi Tamás Department of Computer Science, Eötvös Loránd University, Pázmány Péter stny. 1/C, 1117, Budapest, Hungary aut NATIONALLICENCE 700 1- Weiner Zsuzsa Department of Computer Science, Eötvös Loránd University, Pázmány Péter stny. 1/C, 1117, Budapest, Hungary aut NATIONALLICENCE 773 0- Journal of Geometry SP Birkhäuser Verlag Basel 101/1-2(2011-08-01), 31-50 0047-2468 101:1-2<31 2011 101 22 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer