New posts in Isometries

Realizing mapping classes as isometries?

If $E\oplus_\phi E \cong E\oplus_\psi E,$ does it imply that $\phi= \psi$?

Tweetable way to see Riemannian isometries are harmonic?

There is no arcwise isometry from a high dimensional manifold into a low dimensional manifold

Are there some intrinsic invariants of surfaces other than Gaussian curvature?

Testing for Riemannian isometry