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integrate_by_parts on multiple partial derivatives is wrong #71

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kpeeters opened this issue Feb 23, 2018 · 1 comment
Closed

integrate_by_parts on multiple partial derivatives is wrong #71

kpeeters opened this issue Feb 23, 2018 · 1 comment

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@kpeeters
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\partial{#}::PartialDerivative;
ex:=\int{ a \partial_{0}{\partial_{0}{a}} }{x};
integrate_by_parts(_, $a$);

produces the wrong sign. Works with \partial{#}::Derivative because the latter does not merge derivative indices into one object.
@kpeeters
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Fixed in ce98606.

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@kpeeters