This is the gray area. Do Carmo’s book is under copyright. While the problems themselves are not copyrightable (facts and mathematical statements), the expression of their solutions may be. Many universities have policies against sharing full solution manuals for current textbooks.
do_carmo_solutions.zip │ README.txt └───Chapter1/ │ │ sec1_curves.pdf │ │ sec2_arc_length.pdf │ │ sec3_Frenet.pdf └───Chapter2/ │ │ regular_surfaces.pdf └───Chapter3/ │ │ first_fundamental_form.pdf └───Chapter4/ │ │ gauss_map.pdf └───Chapter5/ │ │ geodesics.pdf └───Appendix/ │ point_set_topology.pdf This is the gray area
They may require you to complete "offers" or download a downloader client. Dead Links: This is the gray area