**Date & Time:** Monday, February 01, 2016, 16:50-17:35

**Venue:** Ramanujan Hall

**Title:** What is hyperbolic geometry?

**Speaker: **Mahan Maharaj, School of Mathematics, TIFR Bombay

**Abstract:** We shall indicate a solution to a problem posed by Euclid: Prove
or disprove the parallel postulate assuming only the first 4 axioms of
Euclidean geometry. The solution leads to a new geometry called hyperbolic
geometry. We shall only assume some familiarity with
calculus.