Jan Arnoldus Schouten (28 August 1883 – 20 January 1971) was a Dutch mathematician and Professor at the Delft University of Technology.
After graduating in 1908, he worked for Siemens in Berlin and for a public utility in Rotterdam before returning to study mathematics in Delft in 1912.
After a short while in industry, he returned to Delft to study Mathematics, where he received his Ph.D. degree in 1914 under supervision of Jacob Cardinaal with a thesis entitled Grundlagen der Vektor- und Affinoranalysis.
During his tenure as professor and as institute head he was involved in various controversies with the topologist and intuitionist mathematician L. E. J. Brouwer.
He was a shrewd investor as well as mathematician and successfully managed the budget of the institute and Dutch mathematical society.
Among his PhD candidates students were Johanna Manders (1919), Dirk Struik (1922), Johannes Haantjes (1933), Wouter van der Kulk (1945), and Albert Nijenhuis (1952).
Weyl did, however, say that Schouten's early book has "orgies of formalism that threaten the peace of even the technical scientist."
Once Schouten became aware of Ricci's and Levi-Civita's work, he embraced their simpler and more widely accepted notation.
Schouten collaborated with Élie Cartan on two articles as well as with many other eminent mathematicians such as Kentaro Yano (with whom he co-authored three papers).
In the 1950s Schouten completely rewrote and updated the German version of Ricci-Kalkül and this was translated into English as Ricci Calculus.
He interacted with Oswald Veblen of Princeton University, and corresponded with Wolfgang Pauli on spin space.