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  4. 17
  5. Abraham Fraenkel

Births on February 17

Abraham Fraenkel
1891Feb, 17

Abraham Fraenkel

Abraham Fraenkel, German-Israeli mathematician and academic (d. 1965)
Abraham Fraenkel (Hebrew: אברהם הלוי (אדולף) פרנקל; February 17, 1891 – October 15, 1965) was a German-born Israeli mathematician. He was an early Zionist and the first Dean of Mathematics at the Hebrew University of Jerusalem. He is known for his contributions to axiomatic set theory, especially his additions to Ernst Zermelo's axioms, which resulted in the Zermelo–Fraenkel set theory.


References

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Events on 1891

  • 10Mar

    Strowger switch

    Almon Strowger, an undertaker in Topeka, Kansas, patents the Strowger switch, a device which led to the automation of telephone circuit switching.
  • 15May

    Rerum novarum

    Pope Leo XIII defends workers' rights and property rights in the encyclical Rerum novarum, the beginning of modern Catholic social teaching.
  • 20May

    Kinetoscope

    History of cinema: The first public display of Thomas Edison's prototype kinetoscope.

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