English

The regular part of second-order differential sectorial forms with lower-order terms

Analysis of PDEs 2015-04-30 v1

Abstract

We present a formula for the regular part of a sectorial form that represents a general linear second-order differential expression that may include lower-order terms. The formula is given in terms of the original coefficients. It shows that the regular part is again a differential sectorial form and allows to characterise when also the singular part is sectorial. While this generalises earlier results on pure second-order differential expressions, it also shows that lower-order terms truly introduce new behaviour.

Keywords

Cite

@article{arxiv.1307.0186,
  title  = {The regular part of second-order differential sectorial forms with lower-order terms},
  author = {A. F. M. ter Elst and Manfred Sauter},
  journal= {arXiv preprint arXiv:1307.0186},
  year   = {2015}
}

Comments

11 pages

R2 v1 2026-06-22T00:43:06.755Z