Mathematics
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All Questions Answers
Score Newest
answer
62
How to find the determinant of this $3 \times 3$ Hankel matrix?
Feb 14, 2014
answer
53
Problems understanding proof of if $x + y = x + z$ then $y = z$ (Baby Rudin, Chapter 1, Proposition 1.14)
Feb 6, 2017
answer
50
Is arrow notation for vectors "not mathematically mature"?
Jan 7, 2015
answer
45
Proof of the hockey stick/Zhu Shijie identity $\sum\limits_{t=0}^n \binom tk = \binom{n+1}{k+1}$
Oct 21, 2015
answer
34
Why factorials above 85 contain zero's at the end.
Feb 10, 2014
answer
33
Why are subsets of compact sets not compact?
Feb 12, 2019
answer
28
What is the intuition behind short exact sequences of groups; in particular, what is the intuition behind group extensions?
Apr 4, 2019
answer
27
Are "if" and "iff" interchangeable in definitions?
Nov 14, 2013
question
26
is it possible to motivate higher differential forms without integration?
Mar 24, 2021
answer
26
What is $\operatorname{Var}(X - Y)$?
Oct 8, 2018
Top Meta posts
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31
is it rude to skip most edits?
21
If a question is interesting, is this automatically context?
15
Why was the question "Could the concept of “finite free groups” be possible?" closed?
9
Answers with $0$ votes.
7
What is "the intuition behind a result"?
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35
Does "red apples and bottles" mean "the apples are red and the bottles are red" or "only apples are red"?
28
What is the mathematical value of children learning and being tested on Roman numerals?
26
Is "don't mind if I do" old-fashioned?
25
Why does KitchenAid recommend against using the Dough Hook on Speed 1?
24
How is "pwned" pronounced, and what does it mean?

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