|Formalism: the thesis that statements acquire their meaning only from the rules for substituting, inserting, eliminating, forming, equality and inequality of symbols within a calculus or system. See also calculus, meaning, rules, content, correctness, systems, truth.|
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Formalism/Duhem: A mathematical formalism is not used in a theory, it consists of a formalism. The performance is due to this structure. The connection with the experience results only locally and at two points: in the input of measured data and in the empirical verification of the calculated.
Ziel und Struktur der physikalischen Theorien Hamburg 1998