%0 Journal Article %T Non-contraction of intermediate admissible discontinuities for 3-D planar isentropic magnetohydrodynamics %A Moon-Jin Kang %J Mathematics %D 2015 %I arXiv %X We investigate non-contraction of large perturbations around intermediate entropic shock waves and contact discontinuities for the three-dimensional planar compressible isentropic magnetohydrodynamics (MHD). To do that, we take advantage of criteria developed by Kang and Vasseur in [6], and non-contraction property is measured by pseudo distance based on relative entropy. %U http://arxiv.org/abs/1510.02194v1