Morphisms between diagrammatic instances: data structures and validation#751
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March 3, 2026 11:05
clippy after rustup some negative tests using elaborator WIP on instancemorphisms fixes
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This PR introduces a data structure for morphisms of diagrams$D:J \rightarrow C$ to $D': J'\rightarrow C$ , i.e. morphisms of instances of double models. We only treat morphisms of discrete double models.
The key features associated with this are checking whether a purported diagram morphism is natural and whether two diagrammatic morphisms are presentations of the same instance morphism.