April 30

Nirmala Sundari, revered as the mystic Anandamayi Ma, was born in the village of Kheora in Bengal.

Taisen Deshimaru, the Japanese Sōtō Zen teacher who established a wide network of practice centers across Europe, died in Tokyo.

Carl Friedrich Gauss, whose work spanned number theory, statistics, geometry and astronomy, was born in Brunswick in 1777.

Claude Shannon, the American mathematician and engineer whose 1948 work founded information theory, was born in Petoskey, Michigan, in 1916.