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

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32 Set theory: difference between belong/contained and includes/subset? Apr 13 '12
20 Big Bang Theory Reference to Formal Logic Sep 23 '14
18 Importance of Linear Algebra [closed] Jun 8 '11
15 How many subsets of $\mathbb{N}$ have the same cardinality as $\mathbb{N}$? Dec 22 '12
15 Where did mathematicians learn how to do truth tables? Jun 3 '11
14 Is the Ratio of Associative Binary Operations to All Binary Operations on a Set of $n$ Elements Generally Small? Jun 16 '11
11 Solve equations $\sqrt{t +9} - \sqrt{t} = 1$ May 22 '13
10 Should a mathematical proof be 'convincing'? Aug 11 '18
9 Why do books titled "Abstract Algebra" mostly deal with groups/rings/fields? May 24 '11
9 How to write "let" in symbolic logic Jan 27 '12
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