Corner homology of the tensor product with the interval

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Let C\mathcal{C} be an ω\omega-category and let I1I^1 be the interval in the biclosed monoidal structure on ωCat⁡\omega\operatorname{Cat}. For either choice of sign, consider the ω\omega-functor C→I1⊗C\mathcal{C}\to I^1\otimes\mathcal{C} sending uu to R(∓)⊗uR(\mp)\otimes u. Interval-tensor conjecture. This functor induces an isomorphism

H∗±(C)⟶H∗±(I1⊗C)H_*^\pm(\mathcal{C})\longrightarrow H_*^\pm(I^1\otimes\mathcal{C})

and, for ∗>0*>0, induces the zero map

H∗∓(C)⟶H∗∓(I1⊗C).H_*^\mp(\mathcal{C})\longrightarrow H_*^\mp(I^1\otimes\mathcal{C}).

The source notes that the assertion is easy to verify in low dimensions and gives only a low-dimensional check for one of the zero maps; the general statement remains open.

References

Primary source

Philippe Gaucher, “Homotopy invariants of higher dimensional categories and concurrency in computer science”, arXiv:math/9902151 (2000).

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