The Google Doodle honours the life and work of Polish mathematician Stefan Banach. Stefan Banach was a founding member of the Lwów School of Mathematics and one of the most influential mathematicians of the twentieth century.
Who is Stefan Banach, and why is he the modern-day Google?
Banach was a founder of modern functional analysis and an original member of the Lwów School of Mathematics. Stefan Banach was born in Kraków, Poland, and was always interested in solving puzzles with his friend Witold Wikosz, who became a famous mathematician as well.
Banach was deemed unfit for military service due to his poor eyesight and taught in local schools during World War I. After meeting Hugo Steinhaus, one of the most celebrated mathematicians of the time, the pair began working together and officially founded the Polish Mathematical Society in April 1919.
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Banach established modern functional analysis, an entirely new branch of mathematics, with the assistance of Steinhaus and other academics. Many concepts in mathematics bear his name, including Banach spaces, Banach algebra, and the Banach-Steinhaus theorem.
The study of vector spaces endowed with some kind of limit-related structure is at the heart of functional analysis, a branch of mathematics. He made significant contributions to topological vector space theory, measure theory, integration, set theory, orthogonal series theory, and functional analysis, all of which are still studied and used today.
Today’s Doodle honours Stefan Banach, a founding member of the Lwów School of Mathematics and the father of modern functional analysis.