An isogeometricsubspace on unstructured multi-patch planar domains

Mario Kapl, Giancarlo Sangalli, Thomas Takacs

Abstract: Highlights•We define a C1-smooth isogeometric subspace over multi-patch domains.•The isogeometric subspace is C1 across edges and C2 at vertices.•We present a basis construction for the isogeometric subspace.•The isogeometric subspace displays optimal approximation properties.