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Prove/Disprove that if two sets have the same power set then they are the same set

homework elementary-set-theory asked Sep 19 '11 at 2:25

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Showing the equivalence of two forms of the Goldbach Conjecture

number-theory prime-numbers asked Sep 20 '11 at 2:02

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Show $\int_0^\infty \frac{e^{-x}-e^{-xt}}{x}dx = \ln(t),$ for $t \gt 0$

calculus integration definite-integral improper-integrals asked Jun 28 '12 at 23:15

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Proof of subadditivity of the Lebesgue measure

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