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visits member for 2 years, 7 months
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Jul
24
revised A proof by contradiction
added 28 characters in body
May
22
revised If $x^2\equiv 1 \pmod{n}$ and $x \not\equiv \pm 1 \pmod{n}$, then either $\gcd(x-1,n)$ or $\gcd(x+1,n)$ is a nontrivial factor of n
added 4 characters in body
May
22
revised If $x^2\equiv 1 \pmod{n}$ and $x \not\equiv \pm 1 \pmod{n}$, then either $\gcd(x-1,n)$ or $\gcd(x+1,n)$ is a nontrivial factor of n
added 109 characters in body; edited title
Jun
24
revised The set of all finite sequences of members of a countable set is also countable
edited body
Dec
21
revised A complicated trigonometric equation
deleted 56 characters in body
Dec
21
revised A complicated trigonometric equation
deleted 12 characters in body
Dec
21
revised A complicated trigonometric equation
added 12 characters in body
Dec
21
revised A complicated trigonometric equation
deleted 6 characters in body
Dec
21
revised A complicated trigonometric equation
added 75 characters in body
Dec
20
revised A complicated trigonometric equation
added 131 characters in body
Dec
20
revised A complicated trigonometric equation
added 107 characters in body