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Nov 23, 2022 at 15:19 comment added user479223 There are some errors in your first few sentences.
Nov 23, 2022 at 1:58 history edited Michael Hardy CC BY-SA 4.0
added 30 characters in body
Nov 22, 2022 at 5:56 comment added mike the last claim, 'invariant under the space and time translations', is a lot weaker than the claim of 'is independent of 𝜙'. The latter cannot be true, for example, the integral is strictly real if $\phi = 0$, but not in general.
Nov 22, 2022 at 2:23 history asked heppoko_taroh CC BY-SA 4.0