Portrait of Max Dehn

Today I offer a poem by Portuguese mathematician F. J. Craveiro de Carvalho -- its initial English publication was in Topology Atlas, 2005 -- about an outstanding mathematician, Max Dehn. Dehn inhabited Craveiro's office via a Springer-Verlag Poster.  Here is a portion of  Craveiro's introduction to the poem.

Counting the women

     The stimulus for this posting appeared a few weeks ago in the Washington Post -- in an article that considers the loneliness of women in STEM fields (science, technology, engineering, math). 
     For me, it was never a conscious thing -- the counting.  It simply happened.  The numbers are small and you know, if you are a woman and a mathematician in a room full of mathematicians, how many women are in the room.  Any room.  It is a small counting number.  Sometimes it is 1.