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Unique Continuation Property of Non-Positive Weak Subsolutions for Parabolic Equations of Higher Order
Published online by Cambridge University Press: 22 January 2016
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When L is a parabolic differential operator of second order, Nirenberg [6] proved the maximum principle for the function u which has second order continuous derivatives and satisfies Lu≧0. Recently Friedman [2] has proved the maximum principle for the measurable function satisfying Lu≧O in the wide sense. This function is named a weakly L-subparabolic function. On the other hand, Littman [5] earlier than Friedman, has defined a weakly A- subharmonic function for an elliptic differential operator A of second order and has showed the maximum principle for it.
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- Copyright © Editorial Board of Nagoya Mathematical Journal 1964