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Stefan Banach: Google Doodle is celebrating one of the world’s most significant mathematicians



Celebrating Stefan Banach

Google Doodle is celebrating Stefan Banach, who is generally viewed as one of the world’s most significant mathematicians and scientists of the 20th Century, on July 22, 2022.

Who was Stefan Banach?

Stefan Banach
Stefan Banach

Stefan Banach was born on 30 March 1892 in Kraków, then, at that point, part of the Austro-Hungarian Empire, into a Góral Roman Catholic family. He founded the field of modern functional analysis, which was a completely new branch of mathematics at the time. He was the founder of modern functional analysis and an original member of the Lwów School of Mathematics.

Stefan Banach’s significant work was the 1932 book, Théorie des opérations linéaires (Theory of Linear Operations), the first monograph on the general theory of functional analysis.

Stefan additionally helped develop the theory of topological vector spaces. Quite a bit of his work is broadly used in mathematics today from Banach space, Banach algebra, Banach manifold, Banach measure, Banach integral, Banach limit, Banach bundle, the Banach–Tarski paradox, the Hahn–Banach theorem, the Banach–Steinhaus theorem, the Banach–Mazur game, the Banach–Alaoglu theorem, and the Banach fixed-point theorem.

Stefan Banach was given the surname of his mother, who was recognized as Katarzyna Banach on his birth certificate, and the first name of his father, Stefan Greczek. He never knew his mother, when still a young boy he was sent by his dad to be raised by a family in Kraków.

Stefan Banach obviously dealt with the engineering school at the Lviv Technical University from 1910 to 1914. Unfit for military service due to poor eyesight, he dealt with street construction and was educated at local schools during World War I.

Toward the finish of the war, a few mathematical papers that Banach had worked on in his extra time were published and brought about his being offered an assistantship at Lviv Technical University in 1920. He was a for the most part self-educated mathematician and professor.

Hugo Steinhaus, a recognized mathematician, and teacher met and got to know a youth Banach. Steinhaus, an early founder of game and probability theory, would later allude to Banach as his “greatest scientific discovery.”

With the assistance of Steinhaus’ academic connections, Stefan Banach established modern functional analysis, a totally new branch of mathematics. Numerous concepts are named after him including Banach spaces, Banach algebra, and the Banach-Steinhaus theorem.

Awarded a doctorate by the University of Lviv (presently Ivan Franco National University of Lviv) in 1922, Banach started his lifelong connection with the university, constructing a school of mathematics and establishing a significant new mathematics journal, Studia Mathematica, in 1929.

Stefan Banach was likewise an original member of the famous school of mathematics in what is currently present-day Lviv, Ukraine. Banach influenced the school’s extraordinary atmosphere. Faculty would meet in noisy cafés, discuss and formulate problems, and write directly on the tables.

Stefan Banach was elected president of the Polish Mathematical Society in 1939, yet his life changed with the Nazi occupation from 1941 to 1944. Under the occupation, Banach was constrained to take care of lice for a German study of infectious diseases. He died of lung cancer in 1945 preceding he could continue his academic life with an appointment at Jagiellonian University, Kraków.

Banach added to the theory of orthogonal series and made innovations in the theory of measure and integration, however his most significant contribution was in functional analysis. Of his published works, his Théorie des opérations linéaires (1932; “Theory of Linear Operations”) is the most significant.

Stefan Banach and his colleagues summarized the previously evolved concepts and theorems of functional analysis and integrated them into a comprehensive system. Banach himself presented the concept of normed linear spaces, which are currently known as Banach spaces.

Stefan Banach additionally proved a few fundamental theorems in the field, and his applications of theory inspired a large part of the work in functional analysis for the next few decades. His two-volume gathered works with analyses, Oeuvres Avec des commentaires, were published in 1979.

Stefan Banach is broadly viewed as one of the most influential mathematicians of the 20th century. He made significant contributions to the theory of topological vector spaces, measure theory, integration, the theory of sets, orthogonal series, and functional analysis, which is as yet studied and used today.

On July 22, 2022, Google featured a Doodle on its homepage for celebrating Stefan Banach.

The present Google Doodle celebrates an original member of the Lwów School of Mathematics and the founder of modern functional analysis — Stefan Banach. On this day in 1922, this influential twentieth-century mathematician officially became a professor.

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