begin
theorem
theorem
canceled;
theorem
canceled;
theorem
theorem
canceled;
theorem Th6:
theorem
theorem
theorem Th9:
theorem Th10:
theorem Th11:
theorem
theorem
theorem Th14:
theorem
theorem
theorem Th17:
theorem
theorem
theorem
theorem
theorem Th22:
theorem
theorem Th24:
theorem
theorem
theorem
theorem
theorem
theorem Th30:
theorem Th31:
theorem
theorem
theorem Th34:
theorem
theorem
theorem
theorem
theorem