Stefan Banach was a Polish mathematician born in 1892 and died in 1945. He is considered one of the most influential mathematicians of the 20th century, particularly known for his work in functional analysis and [[Measurement Theory|measure theory]]. ## Banach spaces Banach made significant contributions to the development of [[Banach spaces]], which are named after him. A Banach space is a complete normed vector space, meaning it is equipped with a norm (a measure of distance) that allows for the convergence of sequences. Banach spaces are used in various branches of mathematics, such as [[Analysis|analysis]], [[Topology|topology]], and partial differential equations. Banach's work on Banach spaces laid the foundation for many important concepts and results in functional analysis. His ideas and theorems have been widely studied and applied by mathematicians worldwide. The field of functional analysis continues to grow and evolve based on Banach's pioneering contributions. # References ```dataview Table title as Title, authors as Authors where contains(subject, "Stefan Banach") or contains(authors, "Stefan Banach") sort title, authors, modified ```