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Mathematics
Daniel Fischer's user avatar
Daniel Fischer's user avatar
Daniel Fischer's user avatar
Daniel Fischer
  • Member for 11 years, 1 month
  • Last seen more than 3 years ago
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About

A long time ago, I studied mathematics. I used to know three or four things about complex analysis, topological vector spaces, and point set topology. But I've forgotten at least five of them.

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200
Why does the google calculator give $\tan 90^{\circ} = 1.6331779e^{+16}$?
Oct 22, 2013
143
An inequality: $1+\frac1{2^2}+\frac1{3^2}+\dotsb+\frac1{n^2}\lt\frac53$
Dec 31, 2013
127
What is the smallest unknown natural number?
Jun 7, 2015
65
Reflection across a line?
Oct 13, 2013
56
Is it possible to solve this equation by hand?
Feb 28, 2014
53
Mean value theorem for holomorphic functions
Dec 6, 2013
49
Why is $(\sqrt{2}+\sqrt{3})^{2008}$ so close to an integer?
Jun 9, 2014
49
Why is the matrix norm $||A||_1$ maximum absolute column sum of the matrix?
Oct 8, 2013
44
Example of a sequence with more than one limit.
Apr 16, 2014
44
Proof that one large number is larger than another large number
Nov 1, 2013
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How are we protecting our heads this year? With Hats!
61
I have been banned from asking questions, what should I do?
52
Why was this on-topic question unilaterally closed and migrated by a moderator?
51
Is it allowed and encouraged to post non-answer joke to low-quality questions?
46
is it rude to skip most edits?
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Why is processing a sorted array faster than processing an unsorted array?
234
Calculating and printing the nth prime number
110
How can I compile without warnings being treated as errors?
106
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
99
Why are difference lists more efficient than regular concatenation in Haskell?