Om Tuesday I finished partitions ¡­

Om Tuesday I finished partitions and equivalence relations. Defined Zn and spoke a little about congruences mod n. We did the group of symmetries of a square as an example. We defined a group and did some of the elementary properties. We have now basically finished section 4 of the book.

Next week Knut Berg will give the lectures. He will do section 5 and 6 and may be some of section 7 depending on the time. There are also exercises on tuesday.

On Thursday next week the drop-in-group starts. It takes place in Rom 534 Niels Henrik Abels hus.

Geir