Template:Selected anniversaries/December 7
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903: Astronomer Abd al-Rahman al-Sufi born. He will publish his Book of Fixed Stars in 964.
1823: Mathematician Leopold Kronecker born. His work will include number theory, algebra, and logic.
1929: Mathematician, physicist, and philosopher Hermann Weyl uses fermions (now known as Weyl semimetals (nonfiction)) to detect and prevent crimes against mathematical constants.
1963: Instant replay makes its debut during the Army-Navy football game in Philadelphia, Pennsylvania, United States.