reserve i,j,k,n,m for Nat;
reserve p,q for Point of TOP-REAL 2;
reserve G for Go-board;
reserve C for Subset of TOP-REAL 2;

theorem Th28:
  for f being non constant standard special_circular_sequence ex i
  st 1 <= i & i < len GoB f & N-min L~f = (GoB f)*(i,width GoB f)
proof
  let f be non constant standard special_circular_sequence;
  take i = i_w_n f;
  thus 1 <= i by JORDAN5D:45;
  i_e_n f <= len GoB f by JORDAN5D:45;
  hence i < len GoB f by Th27,XXREAL_0:2;
  thus thesis by JORDAN5D:def 7;
end;
