Conjecture on preservation of left adjoint bicomodules and a ternary factorization system by Lan{p ∘ −}{p}
Prove that the functor Lan{p ∘ −}{p} sends left adjoint bicomodules to left adjoint bicomodules and preserves the ternary factorization system (Δ_ff, Δ_bo, Σ_dopf) on left adjoint bicomodules.
References
While it is beyond the scope of this paper, we conjecture that the considerations in this section arise because Lan{p\circ-}{p} sends left adjoint bicomodules to left adjoint bicomodules, and preserves the ternary factorization system $(\Delta_ff\Delta_bo\Sigma_dopf)$ of left adjoint bicomodules.
— Categories by Kan extension
(2503.21974 - Spivak, 27 Mar 2025) in Chapter 7 (Basic theory of selection categories), final paragraph