MathGroup Archive 1998

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combinatorics

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15169] combinatorics
  • From: "mcp" <mcp at public.ytptt.sd.cn>
  • Date: Thu, 17 Dec 1998 00:27:47 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

problem:a grid with (m+1) row and [m*C(m+1,2)+1] column,to fill the grid
with m kind of colors, one little grille with one kind color. In the
grid ,there must be a rectangle of which four corner grilles have same
color. Why?




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