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location Monkey Island, OK
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visits member for 2 years, 3 months
seen 14 hours ago

Hello, I am a freshman at The National Autonomous University of Mexico (UNAM).

My interests are contest problems,elementary number theory, combinatorics, graph theory, linear algebra, group theory, abstract algebra and I have been meaning to learn category theory and matroids.


1d
revised Prove that there exists a numbered socket such that for every orientation, two equal numbers coincide
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1d
answered How many rationals m/n with denominator at most 10 are in the interval (0,3)?
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comment Graph Theory Greedy Algorithm
oops I meant to write 4028
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comment Graph Theory Greedy Algorithm
yeah, there are 4028 vertices because there are $2014$ with the letter $u$ and another $2014$ with the letter $v$.
1d
answered Finding a minimum weight spanning tree?
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comment Graph Theory Greedy Algorithm
Yeah, that example is awesome it really fools the algorithm, although it does a lot better on random orderings.
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answered Graph Theory Greedy Algorithm
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comment Graph Theory Greedy Algorithm
what is the greedy algorithm?
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answered How to prove $X\subseteq Z,Y\subseteq Z,Z\setminus X\subseteq Y$ implies $ Z\subseteq X\cup Y$
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comment Order of elements of quotient group
I think the best thing to do here would be to prove cauchy
Sep
20
answered Total probability
Sep
20
answered Special Arrangement
Sep
20
comment Is there such a thing as the Fundamental Theorem of ZFC?
I don't think most people here are familiar with the game of ZFC. Could you state what the rules are please?
Sep
20
comment Is this calculus proof I came up with sound?
I made a small mistake with the indexes, I think it is ok now. Am I right the proof is fine now as is? Thank you David.
Sep
20
revised Is this calculus proof I came up with sound?
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Sep
20
comment Is this calculus proof I came up with sound?
I should be more precise? I'm no expert, but do intervals like that make sense on complex numbers?
Sep
20
asked Is this calculus proof I came up with sound?
Sep
20
revised What is the smallest natural number n?
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Sep
19
awarded  Popular Question
Sep
18
comment Probability: Distinguishable vs Indistinguishable
oh, I should have written $5/9$ since we want the complement of what I had, it is the same as the sum you wrote, only computed in a slightly different way