It should be well known that a Kleinian group and all its normal (non-elementary) subgroups have the same limit set. Do you know any book/article where I could find the proof?
Thank you.
It should be well known that a Kleinian group and all its normal (non-elementary) subgroups have the same limit set. Do you know any book/article where I could find the proof?
Thank you.
You should have a look at Thurston's notes:
http://library.msri.org/books/gt3m/PDF/
corollary 8.1.3 on page 172.