The H–1-norm of tubular neighbourhoods of curves
We study the -norm of the function 1 on tubular neighbourhoods of curves in . We take the limit of small thickness, and we prove two different asymptotic results. The first is an asymptotic development for a fixed curve in the limit → 0, containing contributions from the length of the curve (at order ), the ends ( ), and the curvature ( ). The second result is a Γ-convergence result, in which the central curve may vary along the sequence...