Symmetry
Symmetry

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Symmetry

4 Proofs in group theory

In Section 4 we prove that some of the properties of the groups appearing earlier in the course are, in fact, general properties shared by all groups. In particular, we prove that in any group the identity element is unique, and that each element has a unique inverse.

Click the link below to open Section 4 (9 pages, 237KB).

Section 4 [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)]

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