2 ms·
That's just algebraic topology, go read yourself some Hatcher: http://www.math.cornell.edu/~hatcher/AT/ATpage.html http://www.math.cornell.edu/~hatcher/AT/ATpag
by GFK_of_xmaspast 12y ago
That's just algebraic topology, go read yourself some Hatcher: http://www.math.cornell.edu/~hatcher/AT/ATpage.html http://www.math.cornell.edu/~hatcher/AT/ATpage.html