Police are looking for a former CUNY English professor they believe savagely beat his mother to death with a hammer inside her Norwood apartment, cops said. Magda Dagostino, 64, was found battered inside her Perry Avenue apartment, near 211th Street, about 10:20 p.m. Tuesday, police said. "I didn't see her for a few days," said neighbor Jose Reyes, 33, who added that he would exchange pleasantries with Dagostino while taking out the trash.