Contents

Contents35
Introduction39
1Definitions and Notations47
2Biordered Sets and Bimorphisms59
3Partially Transitive Set of Partial ω-isomorphisms113
4Biordered Set of Idempotents of a Regular Semigroup169
5Structure of Fundamental Regular Semigroups229
6Homomorphism of Fundamental Regular Semigroups303
7Regular Groupoids343
8Regular Systems405
Bibliography463