# Jorge Fernández

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21864
bio website location Mexico City age member for 2 years, 6 months seen 22 mins ago profile views 1,955

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.

 30 Research done by high-school students 28 Find five consecutive odd integers such that their sum is $55$. 19 How can I prove the last digit of $(2^{121985292}-1)$ is $5$ 17 Polygons with equal area and perimeter but different number of sides? 17 Can you give me a visual representation on 1/6 of 4/5 to get 4/30?

# 16,291 Reputation

 +13 Is it possible to permute an unknown binary sequence so that two particular bits are equal? +20 Is it possible to permute an unknown binary sequence so that two particular bits are equal? +20 Groups of Order 12 aren't Simple +5 Connection between algebraic geometry and high school geometry.

# 188 Questions

 28 difference between class, set , family and collection 23 What is category theory useful for? 23 What's a good place to learn Lie groups? 20 if there are 5 points on a sphere then 4 of them belong to a half-sphere. 20 Complete undergraduate bundle-pack [closed]

# 215 Tags

 206 combinatorics × 233 63 group-theory × 64 98 abstract-algebra × 70 59 probability × 71 91 elementary-number-theory × 74 54 number-theory × 32 76 discrete-mathematics × 71 49 soft-question × 34 73 algebra-precalculus × 41 44 graph-theory × 63

# 10 Accounts

 Mathematics 16,291 rep 21864 MathOverflow 340 rep 412 English Language & Usage 121 rep 114 Spanish Language 118 rep 3 Super User 103 rep 3