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### Lorenzo Mascheroni and Emmy Noether

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Date: 11/15/95 at 11:29:46
From: Anonymous
Subject: History

Lorenzo Mascheroni made some kind of discovery?  Also, what woman
mathematician was born in 1882 and at what U.S .college did she end her
teaching career?
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Date: 11/15/95 at 12:6:1
From: Doctor Sarah
Subject: Re: History

Hi again -

Here's some help with your questions.

You can find biographies of mathematicians and all kinds of other
information on math history by consulting the Math Forum's Internet
Mathematics Library:

http://mathforum.org/library/
http://mathforum.org/library/topics/history/

2) There's a biography of Mascheroni on the Web at

http://www-groups.dcs.st-and.ac.uk:80/~history/Mathematicians/Mascheroni.html

It says:

Mascheroni was a geometer who proved in 1797 that all Euclidean
constructions can be made with compasses alone and so a ruler is not
required.

Mascheroni was ordained as a priest at the age of 17.  At first he
taught rhetoric; then, from 1778, he taught physics and mathematics at
the seminary at Bergamo.

In 1786 Mascheroni became professor of algebra and geometry at the
University of Pavia. He later became rector of the university.

calculated Euler's constant to 32 decimal places.  In fact only the
first 19 places were correct and the rest was corrected by Johann von
Soldner in 1809.  Mascheroni's work shows a deep understanding of the
Euler's calculus.

Mascheroni is also known as a poet and he dedicated one of his books
Geometria del compasso (1797) to Napoleon in verse.  In this work
Mascheroni proved that all Euclidean constructions can be made with
compasses alone, so a straight edge in not needed.  In fact this was
(unknown to Mascheroni) proved in 1672 by a little known Danish
mathematician Georg Mohr.

Mascheroni also wrote a well-composed book Nuove ricerchi su
l'equilibrio delle volte (1785) on statics.

3) For your woman mathematician born in 1882, try looking up

http://www.scottlan.edu/lriddle/women/noether.htm

for a biography of Emmy Noether, who was born in 1882 and after coming
to the United States taught at Bryn Mawr College until her death in
1935.

http://www.scottlan.edu/lriddle/women/women.htm

-Doctor Sarah,  The Geometry Forum
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Associated Topics:
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