Deaths on December 29

Leopold Kronecker

Died on December 29, 1891

Leopold Kronecker, Polish-German mathematician and academic (b. 1823)

Leopold Kronecker (German: [ˈkʁoːnɛkɐ]; 7 December 1823 – 29 December 1891) was a German mathematician who worked on number theory, algebra and logic. He criticized Georg Cantor's work on set theory, and was quoted by Weber (1893) as having said, "Die ganzen Zahlen hat der liebe Gott gemacht, alles andere ist Menschenwerk" ("God made the integers, all else is the work of man"). Kronecker was a student and lifelong friend of Ernst Kummer.

References

Leopold Kronecker

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Events on 1891

10 Mar

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

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

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

Deaths on December 29

Leopold Kronecker

Died on December 29, 1891

References

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Events on 1891

Strowger switch

Rerum novarum

Kinetoscope