Manuscript X-A-ST@1 · X-A-ST.tex · proposition · d9ccbde1
Proposition: Scalar existence and support
Flat Cauchy construction and coefficient equations › Scalar equations, with every switch term · lines 843–866 · proof included or linked
X-A-ST@1#prop:scalarconstruction
Equation (eq:scalarsolution) is the unique formal solution of with the free input's Cauchy data and zero positive-order data. Its positive-order sources are smooth and supported in , and
Proof. At orders one and two the equations are respectively
Apply Lemma lem:cauchy. Every coefficient of the source operators contains or a derivative of .
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