Def P  Q == (P  Q) & (P  Q)

is mentioned by

Thm* M:MsgA. ma-is-empty(M)  M =   MsgA

[assert-ma-is-empty]

In prior sections: core fun 1 well fnd int 1 bool 1 int 2 list 1 mb basic rel 1 mb nat mb list 1 num thy 1 mb list 2 mb event system 1 mb event system 2 mb event system 3 mb event system 4

Try larger context: EventSystems IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html