The most difficult equation in mathematics

  • Context: Graduate 
  • Thread starter Thread starter Demystifier
  • Start date Start date
  • Tags Tags
    Mathematics
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
Sign up Log in
62 replies · 23K views
Here's one that I think is hard:

math = ?
 
Physics news on Phys.org
Not necessarily equation, but counting problems are always terribly hard. Here's one that's really difficult: How many DISTINCT valid (within the rules of the game) endings of a standard 9x9 Sudoku game are there?
 

Similar threads

Graduate Mathematical Connection between Cosmic Expansion and Exponential Growth
  • ricco
  • · Replies 24 ·
  • Set Theory, Logic, Probability, Statistics
Replies
24
High School The Paradox of 1 – 1 + 1 – 1 + 1 – 1 + …
  • bhobba
  • · Replies 5 ·
  • Set Theory, Logic, Probability, Statistics
Replies
5
Undergrad What type of mathematics did you find the most difficult?
  • sevensages
  • · Replies 6 ·
  • General Math
Replies
6
Other Recommendation for Mathematics for Physicist and Engineers book
  • trv
  • · Replies 6 ·
  • Science and Math Textbooks
Replies
6
Graduate The Current State of Mathematical Rigour
  • CuriousCarrot
  • · Replies 6 ·
  • Set Theory, Logic, Probability, Statistics
Replies
6
Foundations A rigorous approach to learn Mathematics
  • tuxscholar
  • · Replies 20 ·
  • Science and Math Textbooks
Replies
20
Applied A question about mathematics textbooks for physicists
  • Florian Geyer
  • · Replies 34 ·
  • Science and Math Textbooks
2
Replies
34
Graduate Looking for learning resources for Clifford Algebra
  • JonnyBadFox
  • · Replies 1 ·
  • Other Physics Topics
Replies
1
Graduate Computing S(n,3) Stirling number of 2nd kind
  • Mr Davis 97
  • · Replies 1 ·
  • Set Theory, Logic, Probability, Statistics
Replies
1
Graduate What are your insights on The Hardest Logic Puzzle Ever?
  • mathassistant
  • · Replies 2 ·
  • Set Theory, Logic, Probability, Statistics
Replies
2