Reflection of singularities of solutions
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Michael E. Taylor
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Article
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1975
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John Wiley and Sons
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English
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## Introduction In this paper we shall examine reflection of singularities of solutions of firstorder equations of the form in a region 9 with boundary given by y=O; say 9 = X a9. Here G = G ( y ) = G ( y , x , 0,) is a smooth one-parameter family of pseudo-differential operators of order one on a