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Mathematics
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Michael Weiss's user avatar
Michael Weiss's user avatar
Michael Weiss
  • Member for 11 years, 1 month
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PhD in mathematical logic, but enjoy almost all branches of mathematics and lots of physics.

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25
Are there 3 trig functions or are there 6 trig functions?
Apr 19, 2014
25
How to show a representation is irreducible?
Mar 21, 2014
21
Does this definition of the element come from the definition of the set?
Jun 17, 2023
20
(Soft Question) Why don't number theory books start with Peano axioms or derive the rule of product from first principles? Etc?
Jul 9, 2023
19
Peano axiom of induction with "no junk"
Mar 16, 2023
17
Is the torus the union of two connected, simply-connected open sets?
Jan 30, 2014
17
History of terminology: sheaves, presheaves, etc.
May 28, 2014
17
Mathematical logic required background
May 21, 2017
14
Is there a domain in $\mathbb{R}^3$ with finite non-trivial $\pi_1$ but $H_1=0$?
Feb 18, 2014
12
Why is the function $\Omega\rightarrow\mathbb{R}$ called a random variable?
Feb 23, 2014
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41
What was Euler's motivation for introducing $i$ for $\sqrt{-1}$?
31
Was Occam’s razor ever wrong?
25
What was the vis viva controversy, including its philosophical aspects?
23
Did ancient/medieval non-European cultures have a concept of energy? If so, what are the similarities and differences to the modern concept?
22
Did physicists around 1900 really believe they were close to "figuring it all out"?