
theorem Th11: :: Maxclique:
for R being finite RelStr holds clique# R <= card the carrier of R
proof
let R be finite RelStr;
  consider C being finite Clique of R such that
A1: card C = clique# R by DILWORTH:def 4;
  Segm card C c= Segm card the carrier of R by CARD_1:11;
 hence clique# R <= card the carrier of R by A1,NAT_1:39;
end;
