The paper sheds light on V. Filkorn's contribution to ontology, labelled by the author as polymorphism or polymorphic ontology. Filkorn's contribution is exemplified by the discussion of his category of non-temporality referring to what the author calls timelessness or perichrony. In the context of Slovak philosophy of the 20th and 21st centuries Filkorn is presented as the founder of the methodological-logical extension of Bratislava philosophical-methodological school, which was founded by I. Hrušovský. It is the author's conviction, that Filkorn's philosophical, methodological and logical legacy should be examined in the context of the philosophy of structuralism worldwide as well as the philosophy of timelessness, which is the background of the nascent 'new physics'.
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