generalization of differential_zero_maxmin to class real_normed_vector
generalization of differential_zero_maxmin to class real_normed_vector

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