Reichenbach and Transition from Synthetic a Priori to Relativized a Priori

Document Type : Scientific-research


1 Associate professor in philosophy and Islamic theology, University of Isfahan

2 PhD student of contemporary philosophy, Imam Khomeini International University of Qazvin


Hans Reichenbach has two contrast readings in The Theory of Relativity and APrioriKnowledge (1920) and TheRiseonScientific Philosophy (1951) from Kant's synthetic a priori judgments. The second book rethinking synthetic a priori through the theory of relativity, but The first book seeks to reject these judgments. in 1920, by the distinction between axioms of connection and coordination, he presented two different conceptions of Kant's the a priori: 1. Necessary and unrevisable, 2. The constitutive object of knowledge. Reichenbach maintains the second meaning by rejecting the first meaning and knows it an Einstein doctrine. He blames early positivism for not paying attention to the role of axioms of coordination. Reichenbach's ideas about relativized a priori can reflect and consider: 1. Choosing an approach between Kant and earlier empiricism in the review of synthetic a priori to relativized a priori, 2. Accessing an ideal of definitive scientific philosophy despite critique on Kant's absolutism, 3. inattention to differences in the concept of the convention with Poincaré and logical positivists, 4. Neglecting from link Einstein's theory of relativity with Kant's synthetic a priori, 5. Lack of a clear pattern for separating the principle a priori from the principle experimental. The purpose of this paper is to reconstruct, completion, and development Reichenbach's theory of relativized a priori in the methodology of science.


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