ON CONTROLLABILITY OF SINGULAR SYSTEMS
奇异系统的能控性

In this paper we study the relations between different controllabilities for singular sys-tems.The main result is as follows:C-controllable\Rightarrow Strong controllable\Rightarrow R-controllable\Leftrightarrow \mathcal{D}_0 controllable\Leftrightarrow \mathcal{D}_2 controllable\Rightarrow \mathcal{D}_1 controllable.And we also givethe criterion for the C-controllability of singular systems.