Abstract
The aim of this paper is twofold: on the one hand, it provides a detailed overview of the canonical approach to inflection (following Corbett 2007; 2009; 2015), on the other hand, it attempts to analyze, within this approach, a typologically interesting phenomenon of mixed perfective auxiliation systems attested in a wide array of Italo-Romance dialects. First, the paper introduces the key notions of Canonical Typology (cf.
Bond 2019) applied to inflectional morphology proposing, at the same time, a working Czech terminology of basic terms such as requirements of form etc. Second, the paper proceeds to show that mixed systems, where two auxiliary verbs (corresponding to the outcomes of Latin verbs HABERE/ESSE) alternate within one and the same paradigm, represent a further way in which periphrastic exponence "splits" the inflectional realization of a lexeme.
These systems thus constitute yet another interesting non-canonical inflectional phenomenon worth exploring from the perspective of the canonical typology