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History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.
4
votes
1
answer
788
views
Who first introduced the notion of Killing vector field?
Does anybody know who that first introduced the notion of Killing vector field?
Thanks.
30
votes
2
answers
5k
views
What is the meaning of Text inside of AMS logo [closed]
What is the meaning of the text inside this AMS logo?
The image is from here, and the logo seems to have been frequently used until the 80's. The text is
ΑΓΕΩΜΕΤΡΗΤΟΣ ΜΗ ΕΙΣΙΤΩ
but Google tra …
10
votes
1
answer
1k
views
Why are faithful actions called faithful and who first called them faithful?
Sorry for this question. I asked this on MSE and HSM but no one answered and I decided to post it here that is full of experts.
I want to know why are faithful actions called faithful and who first c …
2
votes
Geodesics on the sphere
I don't know that these are correct or not.
The simplest way (in practice ) that come to my mind is the following trick. Consider two points $p$ and $q$ on sphere. connect them by an straight line …
4
votes
Video lectures of mathematics courses available online for free
30 lectures on Lie Groups, Representation theory and Symmetric Spaces by Wolfgang Ziller, UPenn
27 lectures on Algebraic Topology by Pierre Albin, University of Illinois
36 lectures on Topology & Geo …
7
votes
Most memorable titles
The book of Serge Lang: $\mathrm{SL}_2(\Bbb R)$.
Lang, Serge, $\mathrm{SL}_2(\Bbb R)$, Reading, Mass. etc.: Addison-Wesley Publishing Company. XVI, 428 p. $19.50 (1975). ZBL0311.22001.