Template:Selected anniversaries/May 13: Difference between revisions

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File:Stanisław Leśniewski.jpg|link=Stanisław Leśniewski (nonfiction)|1939: Mathematician, philosopher, and logician [[Stanisław Leśniewski (nonfiction)|Stanisław Leśniewski]] dies. He posited three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology.
File:Stanisław Leśniewski.jpg|link=Stanisław Leśniewski (nonfiction)|1939: Mathematician, philosopher, and logician [[Stanisław Leśniewski (nonfiction)|Stanisław Leśniewski]] dies. He posited three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology.
||Theodore Willard Case (d. May 13, 1944) was an American chemist, physicist, and inventor known for the invention of the Movietone sound-on-film sound film system. Pic.


||1957 – Michael Fekete, Hungarian-Israeli mathematician and academic (b. 1886)
||1957 – Michael Fekete, Hungarian-Israeli mathematician and academic (b. 1886)

Revision as of 07:40, 18 February 2018