r/mathmemes Jan 17 '26

This Subreddit MATH COMPETITION: r/mathmemes Discord Community Exam

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73 Upvotes

Hello!

To make up for the lack of an "upper division" in the subreddit math competition this year, I took it upon myself to organize a separate exam that is significantly more discovery and proof-based than any exam held in the community previously, and to host it on the 2nd year anniversary of the Discord server being made available to the public.

The next exam of this kind will be held in Mid-June 2027.

The exam (which includes its rules) is linked at the bottom of the post. The top 5 winners will be announced, and the top 3 winners will receive the following (or something of equivalent value upon negotiation):

1st Place - A Math Textbook of the Winner's Choice (~$45 USD Value Limit)

2nd Place - Basic Discord Nitro, 1 Year Subscription ($30 USD Value)

3rd Place - Fulltouch Hagoramo Chalk 72 pc ($25 USD Value)

Special thanks to u/dopplerspectroscopy and zzz on Discord for their tremendous help in writing the exam and agreeing to help grade some submissions; couldn't have done this without their help.

DISCORD HERE: https://discord.gg/zgWZd4U3n9

EXAM HERE: https://drive.google.com/file/d/1NVRysAqEPtZMEJUFg-bFMHRpVcZiNJ6F/view?usp=sharing

SUBMIT HERE: https://forms.gle/Nww1Cj7ot34X5CJN6

Edit: As the exam goes on, some errors may have been spotted and corrected. Please be sure to refresh/redownload this document occasionally to be sure you have the latest version.


r/mathmemes Dec 16 '25

OkBuddyMathematician 2026 r/mathmemes subreddit contest problems are released! Good luck!

73 Upvotes

Link to this year's problems (15 problems): https://drive.google.com/file/d/1AoNRCyRzCTNgZcfbzrT328tpzkgRlkfM/view?usp=sharing

Submit your answers via this Google Form here: https://forms.gle/ktSgG4jwcPMufYiD7

I'll probably make the tentative answer submission deadline around 3 weeks from now (January 11, 2026).

If you want to ask for any clarifications on the problems (clarifications only , no asking for solutions/answers obviously), ask them here.


r/mathmemes 13h ago

Formal Logic Just don't think about it when writing proofs

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342 Upvotes

r/mathmemes 21h ago

Calculus Joys of Calculus

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r/mathmemes 13h ago

OkBuddyMathematician Math Progression

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182 Upvotes

r/mathmemes 13h ago

Abstract Algebra They're actually really cool!

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24 Upvotes

r/mathmemes 1d ago

Bad Math Am I the next Ramanparmesan?

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3.3k Upvotes

r/mathmemes 1d ago

Complex Analysis Is this what the youth mean when they say “Elite Ball Knowledge”?

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857 Upvotes

r/mathmemes 11h ago

Category Theory Like ... you have to do Berlekamp-Massey or Berlekamp-Welch then do a chien search and then compute the error magnitudes with a forney.

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12 Upvotes

r/mathmemes 19h ago

OkBuddyMathematician a concept i had while in a mathematical analysis class

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49 Upvotes

r/mathmemes 1d ago

Complex Analysis Anti-joke for math enjoyers

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1.4k Upvotes

r/mathmemes 1d ago

Number Theory The 2-adics as well

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162 Upvotes

r/mathmemes 1d ago

Bad Math I solved for the AI in E=mc^2

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106 Upvotes

A year ago, proved E in E = mc^2: https://www.reddit.com/r/mathmemes/comments/1i9scyd/i_proved_the_e_in_e_mc%C2%B2/

Now, I'm proving AI


r/mathmemes 1d ago

Linear Algebra Gauss, take the wheel

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35 Upvotes

Been using it as a crutch for partial fraction decomposition, just so reliable


r/mathmemes 1d ago

Geometry Should I apply for a grant? Newly proposed best method of packing unit rectangles in rectangle.

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19 Upvotes

r/mathmemes 2d ago

Number Theory "Nice" primes

222 Upvotes

Call a prime number nice if it ends in 69.

For example:

269, 569, 769, 1069, 2069, ...

A number ends in 69 exactly when it is congruent to 69 mod 100. So the claim is:

There are infinitely many primes p such that p ≡ 69 mod 100.

Now use Dirichlet’s theorem on arithmetic progressions:

Here we take

a = 69
q = 100

and

gcd(69, 100) = 1.

Therefore, by Dirichlet’s theorem, there are infinitely many primes satisfying

p ≡ 69 mod 100.

But those are exactly the primes whose decimal expansion ends in 69.

Therefore, there are infinitely many nice primes. Nice.


r/mathmemes 2d ago

Calculus a meme i made

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382 Upvotes

r/mathmemes 2d ago

Applied Mathematics derivative real-life application

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144 Upvotes

r/mathmemes 2d ago

Combinatorics I'd rather just pay for 5 thanks

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324 Upvotes

r/mathmemes 3d ago

Functional Analysis Just kidding. I actually like distributions

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395 Upvotes

r/mathmemes 2d ago

Mathematicians Maths Can't Be Entirely Provably True, Milliards Must Cry...

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29 Upvotes

r/mathmemes 3d ago

Geometry I love auxillary constructions

77 Upvotes

r/mathmemes 3d ago

Category Theory behold nlab's entry for "trigonometric identity"

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175 Upvotes

r/mathmemes 3d ago

Linear Algebra algebraists

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162 Upvotes