When1: 1918
When2: 1952
Who: Hermann Weyl [Weyl, Hermann]
What: mathematician
Where: Germany/USA
works\ Continuum [1918]; Symmetry [1952]
Detail: He lived 1885 to 1955, studied integral equations, helped develop intuitionism, and studied universe symmetries. Abstract objects exist only if they have predicative definitions {predicative theory, Weyl}. Predicative definition must be countable.
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Date Modified: 2022.0224