Lincs completion–final INC coalgebra comparison conjecture

From papers

Let TINC\mathsf{T}_{\mathsf{INC}} denote the tangent endofunctor on INC(C)\mathsf{INC}(\mathcal{C}), and suppose either preceding existence theorem applies, so that the universal Lincs completion and the resulting final INC coalgebra exist. Here νTINC\nu\mathsf{T}_{\mathsf{INC}} denotes the final coalgebra of TINC\mathsf{T}_{\mathsf{INC}}. Lincs completion–final INC coalgebra comparison conjecture. Under the hypotheses of either preceding existence theorem, the universal Lincs completion is equivalent to the resulting final INC coalgebra:

LINCS(C)νTINC,\mathsf{LINCS}(\mathcal{C})\simeq\nu\mathsf{T}_{\mathsf{INC}},

with the equivalence compatible with the embedding of base learning models and their iterated tangent factorization problems. This compares the proposed universal completion with the coalgebraic object supplied by the preceding existence theorems; the source gives no resolution of the comparison.

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Sources & referencesView supporting material

Primary source

Sridhar Mahadevan, “Learning in Infinitesimal Non-Compositional Sketches”, arXiv:2607.15107 (2026).

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