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Results tagged with ho.history-overview
Search options questions only
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user 18850
History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.
114
votes
1
answer
10k
views
What happened to Suren Arakelov? [closed]
I heard that Professor Suren Arakelov got mental disorder and ceased research. However, a brief search on the Russian wikipedia page showed he was placed in a psychiatric hospital because of political …
- 6,259
18
votes
1
answer
2k
views
Did differential geometry undergo a notation change?
As a graduate student, I found the old books of differential geometry used a different set of notation from modern textbooks. For example, Chern and Milnor defined the curvature 2-form by $d\omega-\om …
- 6,259
12
votes
0
answers
1k
views
What is the reason that $\sigma$-algebra replaced $\sigma$-ring in introductory measure theory?
May I ask what is the (historical) reason we adopted the $\sigma$-algebra rhetoric instead of $\sigma$-rings (like used in Halmos)? To my knowledge almost all modern measure theory or real analysis te …
- 6,259