Richard Courant

Richard Courant (January 8, 1888 – January 27, 1972) was a German-American mathematician. He is best known by the general public for the book What is Mathematics?, co-written with Herbert Robbins. This book helped many people understand complex mathematical ideas in a clear and exciting way.

Courant’s research focused on several important areas of mathematics, including real analysis, mathematical physics, the calculus of variations, and partial differential equations. His work in these fields has had a lasting impact on both mathematics and physics.

In addition to his books and research, Courant is also remembered for founding an institute that now carries his name institute now bearing his name. This institute continues to be a place where mathematicians and scientists can study and make new discoveries.

Biography

Richard Courant was born in Lublinitz, in the Prussian Province of Silesia, an area that is now part of Poland. He studied at several universities, including the University of Göttingen, where he became assistant to the famous mathematician David Hilbert and earned his doctorate in 1910. After serving briefly in World War I, he returned to academia and later founded the Mathematical Institute at the University of Göttingen.

Due to political reasons, Courant left Germany in 1933 and moved to New York University in 1936. There, he established an institute for advanced studies in applied mathematics, which later became known as the Courant Institute of Mathematical Sciences. He wrote several important books, including What is Mathematics? with Herbert Robbins, which helped many people understand advanced math concepts. Courant’s work continues to influence the field of mathematics today.

Perspective on mathematics

Richard Courant believed that even when experiments show something seems to work, mathematicians still need to prove it with careful reasoning. He said that just because something looks right in a lab doesn’t mean it’s truly proven. Only a solid mathematical proof can make sure that our ideas about how nature works are correct and make sense.

Personal life

Richard Courant married Nelly Neumann in 1912, but they divorced in 1916. In 1919, he married Nerina Runge, and they had four children. Their children included Ernest, a particle physicist; Gertrude, a biologist; Hans, who worked on the Manhattan Project; and Leonore, a professional violist.

Publications

Richard Courant wrote many important books about mathematics. One of his most famous books is What is Mathematics?, which he wrote with Herbert Robbins. He also wrote books about calculus and mathematical physics with other mathematicians, such as David Hilbert and Fritz John. These books help people learn and understand complex math ideas.

His works include:

• Differential and Integral Calculus (Vol. I and II)
• Introduction to Calculus and Analysis (Vol. I, II/1, and II/2)
• Methods of Mathematical Physics (Vol. I and II) with David Hilbert
• Supersonic Flow and Shock Waves with K. O. Friedrichs