Mathematics
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Rene Schipperus
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All Questions Answers
Score Newest
answer
116
How does Cramer's rule work?
Sep 26, 2016
answer
45
The number $2^{29}$ has exactly $9$ distinct digits. Which digit is missing?
Jun 3, 2014
answer
34
Finding the roots of $(x^2+7x+6)^2 + 7(x^2+7x+6) + 6=x$
Mar 7, 2018
answer
24
Has any error ever been found in Euclid's elements?
Jun 24, 2014
answer
22
Proving ${\sum_{n=1}^\infty {1\over F_n}} <4$
Nov 29, 2017
question
21
Tripos Integral
Dec 23, 2021
answer
21
Lambert's Original Proof that $\pi$ is irrational.
Aug 13, 2014
answer
21
Why is Axiom of Choice required for the proof of countable union of countable sets is countable?
Sep 21, 2016
answer
17
Why did nobody prove undecidability by the "too many problems" argument?
Nov 22, 2017
answer
15
$x^3 = x$ for all $x \in R$, where $R$ is a ring. Prove that $6x = 0$ for all $x \in R$.
Dec 17, 2016
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46
Absolute value inequality for complex numbers
15
Canonical Sheaf of Projective Space
12
Where is Saruman's many colored cloak referenced?
8
Equivalent fomulations of Bott periodicity
8
Why is the current Ebola outbreak different from previous outbreaks?

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