Hello and Some Questions

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strangequark

Thanks for having me! First of all, for those interested, there is another serious (but fun!) math group you can join with cool pics, great forum discussion, weekly movies, vote chess, and team matches:

http://www.chess.com/groups/home/the-emperors-newest-minds

Now for my math questions (I do not yet know the answer to these!):

1. What is the difference between the monad and galaxy of a hyperreal number?

2. How do I determine the monad and galaxy of a given hyperreal number or 0?