Remarks on the Iwaniec-Sverak conjecture Kai Rajala 30C6526B10mapping of finite distortionquasiregular mappingbranched coverReshetnyak's theorem We give sufficient conditions that guarantee discreteness and openness of a mapping of finite distortion with integrable $n$-energy. Indiana University Mathematics Journal 2010 text pdf 10.1512/iumj.2010.59.3946 10.1512/iumj.2010.59.3946 en Indiana Univ. Math. J. 59 (2010) 2027 - 2040 state-of-the-art mathematics http://iumj.org/access/