MaternKernel implementation
# Matern Kernel
I thought it is a good idea to create this issue to keep everyone up-to-date who is involved in developement or already uses the Matern_kernel.
https://gitlab.mpcdf.mpg.de/ift/nifty/-/tree/matern_kernel
@matteani @jroth @parras @sding @gedenhof @vkainz
If I forgot somebody, just mention them to make sure that they are notified.
# TODO
- [x] Implementation of a**b by Simon and Philipp
- [x] Tests
- [x] Cosmetics
- [x] Demo
- [x] Make statistics_summary work for Matern Kernel fluctuations
issue