Fundamental groups of some quadric-line arrangements

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64811In this paper we obtain presentations of fundamental groups of the complements of three quadric-line arrangements in P^2. The first arrangement is a smooth quadric Q with n tangent lines to Q, and the second one is a quadric Q with n lines passing through a point p not in Q. The last arrangement consists of a quadric Q with n lines passing through a point p in Q.19 pagesAlgebraic GeometryFundamental groups of some quadric-line arrangementstext