Repository URL:
http://philsci-archive.pitt.edu/id/eprint/9289
Author(s):
Alexander Afriat
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preprint description
The ``gauge argument'' is often used to `deduce' interactions from a symmetry requirement. A transition---whose justification can take some effort---from global to local transformations is typically made at the beginning of the argument. But one can spare the trouble by \emph{starting} with local transformations, as global ones do not exist in general. The resulting economy seems noteworthy.

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