7th March

On this day in 1737, Leonard Euler presented his paper, De fractionibus continuis dissertatio (Essay on continued fractions), to the St Petersburg Academy of Sciences. With the exception of a few isolated results which appeared in the sixteenth and seventeenth centuries, most of the elementary theory of continued fractions was developed in this paper.

On this day in 2019 Google released a Ladyzhenskaya doodle.