How to trisect an angle in P-geometry. Including a criticism of Poincaré's philosophy of mathematics.
Metaphysical, Biological, Evolutionary Foundations for Mathematics
(As opposed to logical or set-theoretic foundations.)
Midlands Logic Seminars, Tuesday 24th Feb 2015
This is a collection of extracts from Schrödinger's 1944 book What is life? with some comments added by me, mainly trying to clarify what I think he is saying and why I think it is so important for anyone trying to understand how life as we know it is possible in this physical universe. This includes understanding how evolution could have produced mathematicians like Euclid.