Abstract
Let 
be a unital 2-Segal topological space with weakly contractible space of 0-simplices. Replacing X by a weakly equivalent simplicial space, we may assume that X is Reedy fibrant and satisfies \(X_0 = \operatorname {pt} \nolimits \). For example, the Waldhausen S-construction of an exact ∞-category as defined in § 7.3 can be replaced by a weakly equivalent simplicial space satisfying these assumptions.
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References
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Dyckerhoff, T., Kapranov, M. (2019). Hall (∞, 2)-Categories. In: Higher Segal Spaces. Lecture Notes in Mathematics, vol 2244. Springer, Cham. https://doi.org/10.1007/978-3-030-27124-4_9
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DOI: https://doi.org/10.1007/978-3-030-27124-4_9
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