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 Enlightened First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.

Carl Mummert earned this badge 15 times

apr 11 at 10:24
Is a Godel sentence logically valid?
jan 11 at 7:34
What's the difference between predicate and propositional logic?
aug 6 at 11:28
Mendelson's Logic book “cheats” in the propositional calculus?
aug 3 at 10:15
Proving that the set of algebraic numbers is countable without AC
dec 23 '11 at 1:17
How rare is it that a theorem with published proof turns out to be wrong?
oct 15 '11 at 15:06
Is there an infinite set of strings whose Kolmogorov complexities are computable?
aug 22 '11 at 19:56
$\arcsin$ written as $\sin^{-1}(x)$
jul 18 '11 at 1:00
Can it be shown that ZFC has statements which cannot be proven to be independent, but are?
jul 10 '11 at 14:40
Set theoretic definition of a Natural Number
jun 22 '11 at 7:28
(Why) is topology nonfirstorderizable?
mar 25 '11 at 2:20
Why do we restrict the definition of Lebesgue Integrability?
mar 12 '11 at 6:51
Why is the real line not used in Descriptive Set Theory?
dec 30 '10 at 16:53
Simple example of uncountable ordinal
dec 11 '10 at 0:38
Are the rationals minus a point homeomorphic to the rationals?
dec 5 '10 at 6:31
$e^{e^{e^{79}}}$ and ultrafinitism

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