Mathematics
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mathse
  • Member for 8 years, 3 months
  • Last seen more than a month ago
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"There are no facts, only interpretations."

"Last night I lay in bed looking up at the stars in the sky and I thought to myself, where the heck is the ceiling."

I have just noted that, oddly, this site has the same shorthand as myself: mathse (or Math.SE) ...

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All Questions Answers
Score Newest
answer
10
Prove that the union of two disjoint countable sets is countable
May 3, 2014
answer
10
How do I derive the formula for the sum of squares?
Jun 1, 2014
answer
9
CHECK: Let p be a prime number. Show that $\binom{2p}{p}$ is congruent to $2$ mod $p$.
Jun 1, 2014
answer
8
Non-inductive, not combinatorial proof of $\sum_{i \mathop = 0}^n \binom n i^2 = \binom {2 n} n$
May 13, 2014
answer
7
Help with a Binomial Identity: $\sum_{k=0}^{\infty} \binom{n+k}{k}2^{-k} = 2^{n+1}$
May 2, 2014
answer
7
Proving two consecutive odd primes have at least 3 prime divisors.
Sep 22, 2014
question
5
Math Olympiads: GCD of terms in a sequence equals GCD of terms in other sequence
Apr 13, 2014
answer
4
Math Olympiads: GCD of terms in a sequence equals GCD of their indices.
Apr 12, 2014
answer
4
Flipping several biased coins
Sep 22, 2014
answer
4
Combinatorics - binary - very interesting question
Jun 7, 2014
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7
Latex \binom with other types of brackets

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