Branched covers bounding rational homology balls
نویسندگان
چکیده
Prime power fold cyclic branched covers along smoothly slice knots all bound rational homology balls. This phenomenon, however, does not characterize knots. In this paper, we give a new construction of non-slice that have the above property. The sliceness obstruction comes from computing twisted Alexander polynomials, and introduce techniques to simplify their calculation.
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ژورنال
عنوان ژورنال: Algebraic & Geometric Topology
سال: 2021
ISSN: ['1472-2739', '1472-2747']
DOI: https://doi.org/10.2140/agt.2021.21.3569