Simple but often unknown theorems/lemmas/formula? Do you know?
Difference between en4 and en5, changed 60 character(s)
Hallo everyone,↵
↵
Do you know any simple formulas that are often unknown to many? For me, some can be mentioned are ↵
- Euler characteristic,↵
- 2-Ear Theorem,↵
- Pigeonhole,↵
- Fermat,↵
- Handshaking theorem,↵
- incenter formula of a triangle,↵
- harmonic series sum,↵
- pick theorem, ↵
- Shoelace Formula,↵
- McNugget theorem↵
- Caley Formula↵
... And what about you? Can you share some?↵
↵
Thank you.

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en8 English duckladydinh 2017-11-28 04:39:46 37 Tiny change: 'orem\n\n- ' -> 'orem\n\n- Fibonacci: Zeckendorf's theorem\n\n- '
en7 English duckladydinh 2017-11-28 04:38:34 392 Tiny change: '- Graph:\n- - Euler c' -> '- Graph:\n - Euler c'
en6 English duckladydinh 2017-11-23 08:15:37 24
en5 English duckladydinh 2017-11-23 08:15:14 60
en4 English duckladydinh 2017-11-22 00:22:47 18 Tiny change: 'ce Formula... And wh' -> 'ce Formula, McNugget theorem... And wh'
en3 English duckladydinh 2017-11-22 00:19:13 19 Tiny change: 'ck theorem... And wh' -> 'ck theorem, Shoelace Formula... And wh'
en2 English duckladydinh 2017-11-20 23:11:19 35 Tiny change: 'a triangle... And wh' -> 'a triangle, harmonic series sum, pick theorem... And wh'
en1 English duckladydinh 2017-11-20 20:32:45 344 Initial revision (published)