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math.GT2024
A note on rational surgeries on a Hopf link
Velibor Bojković, Jovana Nikolić, Mladen Zekić
It is clear that every rational surgery on a Hopf link in -sphere is a lens space surgery. In this note we give an explicit computation which lens space is a resulting manifold.…
math.LO2024
Coherence for logicians
Zoran Petric, Mladen Zekic
This paper is addressed to logicians not familiar with category theory. It gives a new proof of coherence for symmetric monoidal closed categories, proven by Kelly and Mac Lane in…