Wild Character Varieties, points on the Riemann sphere and Calabi's examples
arXiv:1501.00930
Abstract
We will give several descriptions of some basic examples of wild character varieties, including a discussion of links to work of Sibuya, Calabi and Euler, amongst others.
23 pages. v5: terminology regarding Stokes filtrations adjusted, better reflecting the analogy with Hodge structures, as in arXiv:1903.12612 (v4 is closest to the published version)