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Erosion as the Ontological Condition of Diachronic Self-Identity: A Deductive Self-Model Theorem of Phenomenological Lack

Morteza Niami

PhilPapers (PhilPapers Foundation) July 3, 2026 preprint DOI: 10.5281/zenodo.21164343 (opens in new tab)

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Characteristics Theoretical or philosophical paper
Keywords Normative Identity music Appeal Modality human–computer interaction Phenomenology philosophy Class philosophy Contrast vision State computer science Epistemology Object grammar Property philosophy Modal operator Calculus dental
Key points Argues that phenomenological lack is a necessary modal consequence of diachronic self-identity, arising from the comparison of present state to a normative horizon under representational non-coincidence.

Abstract

Abstract This paper establishes a fully deductive account of phenomenological lack grounded in diachronic self-identity. I demonstrate that any system satisfying diachronic identity necessarily operates under temporal indexation, which analytically entails the formation of a minimal self-model as a structural requirement of maintaining identity across non-coincident temporal states. From this, I derive that self-relation is necessarily non-equivalent across time, and that any internal comparison structure must generate a normative horizon. Phenomenological lack is shown to be the modal consequence of comparing present state to this horizon under conditions of representational non-coincidence. Erosion is redefined as the class of all structural transformations induced by temporal indexation, without appeal to decay or empirical assumptions. Keywords: Diachronic identity, self-model theorem, non-equivalence, temporal indexation, lack, ontology, modality

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