nLab
inversion involution

Contents

Contents

Idea

For AA an abelian group there is a group automorphism

:AA - \;\colon \; A \stackrel{\simeq}{\longrightarrow} A

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

This is an involution.

Examples

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.