Why does the mapping class group of the genus three non-orientable closed surface has no Pseudo-Anosov auto-homeomorphism?

Is it possible to give an elementary proof of the aforementioned result? This was proved by Robert Penner (at "A construction of pseudo-Anosov homeomorphisms". Robert C. Penner. Trans. Amer. Math....

02 February 2016 1,536 1 View