mb event system 5 Sections EventSystems Doc
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Def KindDeq == union-deq(IdLnkId;Id;product-deq(IdLnk;Id;IdLnkDeq;IdDeq);IdDeq)

is mentioned by

Thm* ltg:(IdLnkIdType), i:Id, da1,da2:k:Knd fp-> Type.
Thm* (ltg  da-outlinks(da1  da2;i))
Thm* 
Thm* (ltg  da-outlinks(da1;i))  (ltg  da-outlinks(da2;i))
[da-outlinks-join]
Thm* da:k:Knd fp-> Type, k:{k:Knd| k  dom(da) & isrcv(k) }.
Thm* da-outlink-f(da;k IdLnkIdType
[da-outlink-f_wf]

In prior sections: mb event system 2 mb event system 4

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mb event system 5 Sections EventSystems Doc