3 papers
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.GT2023
From Heegaard diagrams to surgery
Jovana Nikolic, Vuk Ovaskainen, Zoran Petric
A procedure of going from Heegaard diagrams to framed link diagrams is explained in this note.
math.CT2023
A diagrammatic presentation of the category 3Cob
Jovana Nikolic, Zoran Petric, Mladen Zekic
A category equivalent to the category of 3-dimensional cobordisms is defined in terms of planar diagrams. The operation of composition in this category is completely described via…