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

You are not logged in. #1 20130502 15:06:22
Dots and LinesIf G is a regular graph and d, e and v denote the degree, the number of edges and the number of vertices respectively, then e = dv/2. 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #2 20130514 13:39:44
Re: Dots and Linessince a line segment or "edge" has two ends, then yes, 1/2 is the formula. v=dots d=ends of lines on a dot. e=#ofline segs igloo myrtilles fourmis #3 20130519 00:55:36
Re: Dots and LinesRicky? He's gone 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda 