Template:Are You Sure/September 22

A nomogram (from Greek νόμος nomos, "law" and γραμμή grammē, "line"), also called a nomograph, alignment chart or abaque, is a graphical calculating device, a two-dimensional diagram designed to allow the approximate graphical computation of a mathematical function.

• ... that engineer and mathematician Philbert Maurice d'Ocagne invented the nomography, the graphic computation of algebraic equations on charts?

• ... that mathematician Shoshichi Kobayashi studied Riemannian and complex manifolds, transformation groups of geometric structures, and Lie algebras?