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Carsten S's user avatar
Carsten S's user avatar
Carsten S
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96
What does the term "undefined" actually mean?
Apr 10, 2015
35
What's wrong with this reasoning that $\frac{\infty}{\infty}=0$?
Dec 4, 2016
26
If a series converges, then the sequence of terms converges to $0$.
Jan 9, 2014
22
Finding a mistake using Mayer-Vietoris
Feb 28, 2019
17
What does "open set" mean in the concept of a topology?
Feb 20, 2017
16
The pigeonhole principle and a professor who knows $9$ jokes and tells $3$ jokes per lecture
Jun 7, 2018
16
How to prove that if the determinant of the matrix is zero then at least one eigenvalue must be zero?
Jun 25, 2018
14
$\bigcup \emptyset$ is defined but $\bigcap \emptyset$ is not. Why?
Mar 17, 2014
13
Piecewise linear function and absolute value
Aug 30, 2014
11
Matrix raised to 14th power
Dec 1, 2013
Top network posts
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41
Do you have to say "ungetoastetes Toast" to mean soft bread?
29
Why does "Leidenschaft" mean "passion" while "leiden" means "to suffer"?
29
Why is Entschuldigung pronounced as ent-shuldigung instead of en-chu-ldigung?
23
Woher kommt das g in „Kopenhagen“? Why is there a g in “Copenhagen”?
20
Why is there "n" at end of plural of meter but not of "kilometer"