Regarding behaviour equivalence in higher-order process calculi, Sangiorgi
(Inform. and Comput. 131 (1996) 141) and Thomsen (Inform. and Comput. 116 (
1995) 38) introduced context and higher-order bisimulations, respectively.
In this paper, uniqueness of solutions of equations with respect to strong
context and higher-order bisimilarities and compatibility of strong context
and higher-order bisimilarities with recursive definitions are shown. (C)
2001 Elsevier Science B.V. All rights reserved.