# Einstein's contribution to Mathematics?

What contribution to mathematics did Einstein make, or was he only interested in Physics and derived formulas using mathematics?

• Einstein summation convention? en.wikipedia.org/wiki/Einstein_notation Jul 27 at 17:25
• He devised a new proof of the Pythagorean Theorem.
– Mary
Jul 28 at 0:08
• The $\Gamma^i_{jk}$ notation for Christoffel symbols. See hsm.stackexchange.com/questions/7974/…
– KCd
Jul 28 at 11:55
• His work in physics also directly inspired mathematical interest in Lorentzian manifolds, and more generally semi-Riemannian manifolds.
– KCd
Jul 28 at 11:57