- #1
naima
Gold Member
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In this thread, ramparts asked how integration by parts could be used in general relativity.
suppose you have
##\int_M (\nabla^a \nabla_a f) g .Vol##
Can it be written like
##\int_M (\nabla^a \nabla_a g) f .Vol## plus a boundary integration term (by integrating twice by parts)?
I think thay it is possible.
look at Benini's paper page 18. I would like to understand the math behind that.
suppose you have
##\int_M (\nabla^a \nabla_a f) g .Vol##
Can it be written like
##\int_M (\nabla^a \nabla_a g) f .Vol## plus a boundary integration term (by integrating twice by parts)?
I think thay it is possible.
look at Benini's paper page 18. I would like to understand the math behind that.
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