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Mathematics
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nonpop

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 7 months
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  • Last seen 2 days ago

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Top posts (50) All Questions Answers | Votes Newest

13 Proving $A$ is invertible if $A + A^2 = I$. Nov 18 '12
11 The cross product of two sets Nov 4 '12
10 Is a continuous mapping which is also open (closed) must be closed(open)? Nov 21 '12
9 How to teach mathematical induction? Jun 18 '13
8 What is the point of a lift in topology? Dec 20 '12
6 Equivalence Classes in the cartesian plane Dec 15 '12
6 Area enclosed by the curve $x^2+y^2=|x|+|y|$. Nov 7 '12
5 Vector Space or Not? Dec 2 '12
5 Why don't we define “imaginary” numbers for every “impossibility”? Dec 16 '12
5 Set theory aspects of category theory Jan 14 '14
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