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**DON’T FORGET: Monday is a Sage workshop in BESC 385.**- Finish writing up the proof that congruence is an equivalence relation (from class; we just had transitivity to go).
- Contemplate how to compute 2
^{100} modulo 11 by hand. How can you do this with the fewest operations? - Contemplate what 1/2 should be modulo 7, if we are going to define it in some useful way. Why?
- Now, read p. 127-133 of your text (This is Chapter 5, the first 7 pages).
- Homework for next week has been posted.