13,946 reputation
21761
bio website
location Mexico City
age
visits member for 2 years, 5 months
seen 15 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.


2d
revised Number of 8 character passwords including numbers and letters without repetition
added 113 characters in body
Nov
23
revised Probability that this stamp is one that you haven't seen before
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Nov
21
revised Arrangements of $3n$ balls.
added 94 characters in body
Nov
21
revised Arrangements of $3n$ balls.
deleted 60 characters in body
Nov
21
revised Arrangements of $3n$ balls.
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Nov
20
revised Arrangements of $3n$ balls.
added 74 characters in body
Nov
20
revised how many integers between one and 100000 have the sum equal to fifteen?
added 320 characters in body
Nov
20
revised how many integers between one and 100000 have the sum equal to fifteen?
added 320 characters in body
Nov
20
revised Number of Bit Strings with Five Zeros
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Nov
20
revised Coloring 3 by 3 square such that every unit square has an even number of squares it shares a vertex with of the same color (including itself).
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Nov
20
revised Combinatorics question about choosing non consecutive integers
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Nov
17
revised Relationships between altitudes and medians of a triangle
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Nov
17
revised Relationships between altitudes and medians of a triangle
edited body
Nov
8
revised What combinatorial quantity the tetration of two natural numbers represents?
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Nov
8
revised Automorphism group of p group
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Nov
8
revised Automorphism group of p group
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Nov
6
revised primitive root of modulo 9 and modulo 28
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Nov
6
revised What will be nth term of the following sequence?
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Nov
5
revised count number of permutation that map no even number to itself
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Nov
5
revised Arguing the correctness of an alternative, way to count how many bit sequences with exactly n zeroes and k+1 ones are there
added 2 characters in body