add lemmas power2_le_imp_le and power2_less_imp_less
add lemmas power2_le_imp_le and power2_less_imp_less

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle