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math.AG2022
Obstructions of extension of vector bundles
Vladimir Baranovsky, Hongseok Chang
In the holomorphic or algebraic setting we consider a vector bundle E on a smooth subvariety X in a smooth variety Y over a field of characteristic zero. Assuming E extends to the…
math.GT2022
An upper bound of the numbers of minimally intersecting filling coherent pairs
Hong Chang
Let denoting the genus closed orientable surface. An {\em origami} (or flat structure) on is obtained from a finite collection of unit Euclidean squares by gluing e…
math.GT2022
Efficient geodesics in the curve complex and their dot graphs
Hong Chang
For the complex of curves of a closed orientable surface of genus , , the notion of efficient geodesic in was introduced in arXiv:1408.4133. There it was e…