Mathematicians do not study objects, but relations between objects ppmarques 11 years ago Mathematicians do not study objects, but relations between objects.~ Henri Poincaré |Castro Laboreiro, Portugal| Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on Tumblr (Opens in new window) Tumblr Email a link to a friend (Opens in new window) Email Share on Pinterest (Opens in new window) Pinterest Castle of Castro Laboreiro #3Date9th March 2015Castle of Castro Laboreiro #2Date9th March 2015Castle of Castro Laboreiro #1Date9th March 2015
