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

You are not logged in. #1 20130204 20:20:52
Is this a group ?Is ({0,n} ,~) a group where x~yxy and n is any postive real number? #4 20130204 21:00:14
Re: Is this a group ?Yes,but ~ is associative when you only use 0 and n,does that count? #5 20130204 21:17:00
Re: Is this a group ?Yes, that is a group. It is even an Abel's group. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #7 20130204 22:43:16
Re: Is this a group ?hi Still Learning You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #8 20130205 04:23:57
Re: Is this a group ?Ok,but i want to know if the operation has to be always associative or it has to be associative only for the set? 