Almost toric fibrations on symplectic blow ups
Symplectic Geometry
2025-10-02 v1
Abstract
Given a symplectic 4-manifold with an almost toric fibration and a symplectic ball embedding whose image under the moment map is contained in an affine convex set R, we produce a symplectomorphism between the almost toric blow-up and the symplectic blow-up which is the identity on the pre-image of the complement of R. Furthermore, under a compatibility condition of the ball embedding with the boundary divisor, we show that the symplectomorphism can be chosen to preserve the induced symplectic log canonical divisors.
Keywords
Cite
@article{arxiv.2510.00994,
title = {Almost toric fibrations on symplectic blow ups},
author = {Pranav Chakravarthy and Yoel Groman},
journal= {arXiv preprint arXiv:2510.00994},
year = {2025}
}
Comments
Initial release. Comments welcome!