Dice Question Streamline Icon: https://streamlinehq.com

Equivalence between loose right modules and double operad algebras

Establish an equivalence between the 2-category of symmetric monoidal loose right modules over isofibrant double categories and pseudo symmetric monoidal pseudo double functors whose unitors and laxators are companion commuter transformations, and the 2-category of algebras for isofibrant double operads with all tensors and pseudo-morphisms whose universal comparison map between tensors is companion to an isomorphism, thereby clarifying the precise relationship between the double operadic and module-based formulations of categorical systems theory.

Information Square Streamline Icon: https://streamlinehq.com

Background

The paper adopts symmetric monoidal loose right modules over symmetric monoidal double categories as the primary framework for categorical systems theory, rather than algebras for double operads. In 1-categorical settings, such module-like structures correspond closely to operad algebras via lax monoidal functors, but in the double categorical setting this correspondence is more subtle.

To reconcile these two perspectives, the authors propose a specific conjectural equivalence between a 2-category built from loose right modules (with constraints on unitors and laxators) and a 2-category of algebras for isofibrant double operads (with tensor conditions and a companion property on universal comparison maps). Proving this equivalence would unify operadic and module-based approaches to systems composition in the double categorical landscape.

References

For the expert reader, here is a specific conjecture concerning their relationship: the 2-category of symmetric monoidal loose right modules over isofibrant double categories and pseudo symmetric monoidal pseudo double functors whose unitors and laxators are companion commuter transformations is equivalent to the 2-category of algebras for isofibrant double operads with all tensors and pseudo-morphisms whose universal comparison map between tensors is companion to an isomorphism.

Towards a double operadic theory of systems (2505.18329 - Libkind et al., 23 May 2025) in Remark djm-00H9, Section 'Double operadic systems theory'