Contents

# Contents

## Idea

For $A$ an abelian group there is a group automorphism

$- \;\colon \; A \stackrel{\simeq}{\longrightarrow} A$

given by sending any element $a$ to its inverse $-a$.

This is an involution.

## References

• Richard Hain, Lectures on Moduli Spaces of Elliptic Curves (arXiv:0812.1803)

Last revised on April 9, 2014 at 11:45:50. See the history of this page for a list of all contributions to it.