| Some definitions of interest. |
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world | Def World
Def == T:Id Id Type
Def == TA:Id Id Type
Def == M:IdLnk Id Type
Def == (i:Id    (x:Id T(i,x))) (i:Id    action(w-action-dec(TA;M;i)))
Def == (i:Id    ({m:Msg(M)| source(mlnk(m)) = i } List)) Top |
| | Thm* World Type{i'} |
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Msg | Def Msg(M) == l:IdLnk t:Id M(l,t) |
| | Thm* M:(IdLnk Id Type). Msg(M) Type |
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w-action | Def Action(i) == action(w-action-dec(w.TA;w.M;i)) |
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action | Def action(dec) == Unit+(k:Knd dec(k)) |
| | Thm* dec:(Knd Type). action(dec) Type |
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IdLnk | Def IdLnk == Id Id  |
| | Thm* IdLnk Type |
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Id | Def Id == Atom  |
| | Thm* Id Type |
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w-action-dec | Def w-action-dec(TA;M;i)(k)
Def == kindcase(k;a.TA(i,a);l,tg.if destination(l) = i M(l,tg) else Void fi) |
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w-isnull | Def isnull(a) == isl(a) |
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isl | Def isl(x) == InjCase(x; y. true ; z. false ) |
| | Thm* A,B:Type, x:A+B. isl(x)  |
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lsrc | Def source(l) == 1of(l) |
| | Thm* l:IdLnk. source(l) Id |
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mlnk | Def mlnk(m) == 1of(m) |
| | Thm* M:(IdLnk Id Type), m:Msg(M). mlnk(m) IdLnk |
| | Thm* the_es:ES, m:Msg. mlnk(m) IdLnk |
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nat | Def == {i: | 0 i } |
| | Thm* Type |
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top | Def Top == Void given Void |
| | Thm* Top Type |