- **Set Theory, Logic, Probability, Statistics**
(*http://www.physicsforums.com/forumdisplay.php?f=78*)

- - **Relations on A are Reflex. and Symm. Proof?**
(*http://www.physicsforums.com/showthread.php?t=256254*)

Relations on A are Reflex. and Symm. Proof?Let A be a finite set with m elements.
How many relations on A are reflexive and symmetric? I know the answer to this already but does anyone know where I can find a proof for that answer? I am interested in the logic used to get to the answer. Thanks. -666999 |

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