This paper interprets certain methodological and epistemological issues raised by Einstein. Part one reflects on the issue of evaluation criteria of the logical simplicity of the axiomatic systems that represent physical theories. Part two treats the issues related to the method of constructing axiomatic systems that represent physical theories. The Carnap's method of constructing the above systems...
The author presents main features of Kazimierz Ajdukiewicz's idea and Alfred Tarski's objection regarding definition of meaning as well as condition proposed by J. Giedymin. Then some consequences of the Tarski's objection are shown.
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