A mathematician.[ref]
https://senate.universityofcalifornia.edu/_files/inmemoriam/html/davidgale.html. University of California memorial: mathematics professorship and life dates, 1921–2008
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David Gale can refer to multiple individuals, but he is most commonly known as an influential American mathematician who made significant contributions to game theory, economics, and combinatorial optimization. Born on September 24, 1921, and passing on March 7, 2008, Gale is best known for his work on the Gale-Shapley algorithm, which is a foundational algorithm in matching theory, particularly in the context of stable marriages and other matching problems.