We build the first examples of diffeomorphisms that are distorted in a group of C1 diffeomorphisms yet undistorted in the corresponding group of C2 diffeomorphisms. This explicit construction is performed for the closed interval.
We build the first examples of diffeomorphisms that are distorted in a group of C1 diffeomorphisms yet undistorted in the corresponding group of C2 diffeomorphisms. This explicit construction is performed for the closed interval.