Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,529

This is interesting: http://www2.stetson.edu/~efriedma/squinsqu/

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,394

Hi MathsIsFun;

Thanks for providing that! There is a link to his paper at the bottom. Also, it will eventually take you to the Electronic journal of combinatorics.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,552

When I worked in produce, the oranges came 72 or 113 in a box.

I used to sift thru IEEE journals from the 1920's to the present on logic circuits, talking about combinatorics.

Once I ran into a neat algorithm using XOR gates that I could not comprehend though.

**igloo** **myrtilles** **fourmis**

Offline