PageHeader : Funkcialaj Ekvacioj, 20 (1977) 9-21 Title : Augmentation of Control System and Its Influence on Title : Controllability and Optimality AuthorInfo : By AuthorInfo : Setuzo YOSIDA AuthorInfo : (Tokai University, Japan) section : 0. Introduction. section : 1. Augmentation of system and controllability. section : 2. Corollaries and examples. section : 3. Influence on optimality and examples. section : 4. Sufficient conditions for $J^{*}\leqq I^{*}$ and $J^{*}