Brauer-Manin obstruction for Wehler K3 surfaces of Markoff type
arXiv:2302.11515 · doi:10.1142/S1793042124500969
Abstract
Following recent work by E. Fuchs et al., we study the Brauer-Manin obstruction for integral points on Wehler K3 surfaces of Markoff type. In particular, we construct some families which fail the integral Hasse principle via the Brauer-Manin obstruction with some counting results of similar nature to those in previous works by Ghosh-Sarnak, Loughran-Mitankin, Colliot-Thélène-Wei-Xu. We also give some counterexamples to strong approximation (where integral points can exist) which can be explained by the Brauer-Manin obstruction, and study a few aspects of rational points on affine surfaces.
38 pages; comments are welcome. arXiv admin note: text overlap with arXiv:2202.07142