N=P P=01982 DBM ref=DBM Francisco Sanches Erotemata super geometricas euclidis demonstrationes Matemática yLAT Lugduni Antonium Gryphium 1581 y15 y158 FRANCISCO SANCHES EROTEMATA SUPER GEOMETRICAS EUCLIDIS DEMONSTRATIONES MATEMATICA LUGDUNI ANTONIUM GRYPHIUM Leiden anyHolanda anyEuropa