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Don't have much time these days...


Nov
18
revised What algorithm is used by computers to calculate logarithms?
deleted 60 characters in body
Aug
13
revised Where can I download the approx 1500 Appel-Haken reducible configurations in the Four-Color-Theorem proof?
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Aug
12
revised Truncated alternating binomial sum
added 310 characters in body
Aug
5
revised Elementary proof there are infinitely many primes of the form $4n+1$
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Jul
31
revised How prove $7\mid abcd$, if $a^{14}+b^{14}+c^{14}=d^{14}$
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Jul
28
revised How prove $\sqrt{r^2+c^2}$ is irrational
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Jul
27
revised Find the pair of values $a[i]$, $a[j]$ such that $a[i]\,\&\,a[j]$ is maximum
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Jul
26
revised Finding whether a sum of numbers in a set generate another number
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Jul
26
revised How to show $n(n+1)(2n+1) \equiv 0 \pmod 6$?
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Jul
25
revised Proving something about the Game Nim
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Jul
24
revised Showing that if $p$ is prime, then $(p^4 + 4)$ can't be prime
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Jul
23
revised Prove that an expression is zero for all sets of distinct $a_1, \dotsc, a_n\in\mathbb{C}$
added 54 characters in body
Jul
22
revised Discrete Mathematics Function Proof
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Jul
19
revised How could I improve this approximation?
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Jul
19
revised Proving that one of $a(1-b), b(1-c), c(1-a) \le \frac{1}{4}$
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Jul
19
revised Proving that one of $a(1-b), b(1-c), c(1-a) \le \frac{1}{4}$
deleted 385 characters in body
Jul
19
revised inequality $(a+c)(a+b+c)<0$, prove $(b-c)^2>4a(a+b+c)$
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Jul
19
revised Proving that one of $a(1-b), b(1-c), c(1-a) \le \frac{1}{4}$
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Jul
19
revised Difficult Integral Involving the $\ln$ function
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Jul
19
revised The amount of closed binary operations on A under these conditions are what?
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