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21 hours ago audit First answers
21 hours ago
yesterday comment added Roberto Cavicchioli Thank you, this is exactly the kind of proof I was looking for, which brings a new perspective on the theorem. The usual proof employs the projection operator, which has an alternate characterisation as the solution operator to a variational problem, and so I see this proof as fundamentally shedding light on the relationship between the representation theorem and the variational problem directly. If any of the other proofs you mention give a new perspective on the result, I would be grateful if you could share them.
yesterday history answered Lukas CC BY-SA 4.0