Ab2ab2 26.4k1313 gold badges7272 silver badges105105 bronze badges 10 And during the 60s, in my Latin class we chanted the relevant Ubi, ubi est meus sub ubi? bib In nineteenth century Europe, there was mathematical and philosophical dialogue about the precise character on the natural figures. Henri Poincaré said that https://share.evernote.com/note/f5ed0f3d-3352-3d51-727d-10fa609eb157