On formation of singularity of the full compressible magnetohydrodynamic equations with zero heat conduction Xin Zhong Indiana University Mathematics Journal 2019 text pdf 10.1512/iumj.2019.68.7749 10.1512/iumj.2019.68.7749 en Indiana Univ. Math. J. 68 (2019) 1379 - 1407 state-of-the-art mathematics http://iumj.org/access/