Nuprl Lemma : assert-graph-rcvset

a:Id ⟶ Id ⟶ Id. ∀b:Id. ∀S:Id List. ∀G:Graph(S). ∀k:Knd.
  (↑graph-rcvset(a;b;S;G;k) ⇐⇒ ∃i,j:Id. ((i ∈ S) ∧ (j ∈ S) ∧ (i⟶j)∈G ∧ (k rcv((link(a j) from to j),b) ∈ Knd)))


Proof




Definitions occuring in Statement :  graph-rcvset: graph-rcvset(a;b;S;G;k) rcv: rcv(l,tg) Knd: Knd mk_lnk: (link(n) from to j) id-graph-edge: (i⟶j)∈G id-graph: Graph(S) Id: Id l_member: (x ∈ l) list: List assert: b all: x:A. B[x] exists: x:A. B[x] iff: ⇐⇒ Q and: P ∧ Q apply: a function: x:A ⟶ B[x] equal: t ∈ T
Definitions unfolded in proof :  all: x:A. B[x] iff: ⇐⇒ Q and: P ∧ Q implies:  Q member: t ∈ T prop: uall: [x:A]. B[x] rev_implies:  Q so_lambda: λ2x.t[x] so_apply: x[s] id-graph: Graph(S) Knd: Knd IdLnk: IdLnk graph-rcvset: graph-rcvset(a;b;S;G;k) lnk: lnk(k) tagof: tag(k) isrcv: isrcv(k) isl: isl(x) outl: outl(x) band: p ∧b q ifthenelse: if then else fi  btrue: tt pi2: snd(t) pi1: fst(t) lname: lname(l) lsrc: source(l) ldst: destination(l) bool: 𝔹 unit: Unit it: uiff: uiff(P;Q) uimplies: supposing a bfalse: ff exists: x:A. B[x] or: P ∨ Q sq_type: SQType(T) guard: {T} bnot: ¬bb assert: b false: False not: ¬A subtype_rel: A ⊆B id-graph-edge: (i⟶j)∈G mk_lnk: (link(n) from to j) rcv: rcv(l,tg) cand: c∧ B Id: Id top: Top l_member: (x ∈ l)

Latex:
\mforall{}a:Id  {}\mrightarrow{}  Id  {}\mrightarrow{}  Id.  \mforall{}b:Id.  \mforall{}S:Id  List.  \mforall{}G:Graph(S).  \mforall{}k:Knd.
    (\muparrow{}graph-rcvset(a;b;S;G;k)
    \mLeftarrow{}{}\mRightarrow{}  \mexists{}i,j:Id.  ((i  \mmember{}  S)  \mwedge{}  (j  \mmember{}  S)  \mwedge{}  (i{}\mrightarrow{}j)\mmember{}G  \mwedge{}  (k  =  rcv((link(a  i  j)  from  i  to  j),b))))



Date html generated: 2016_05_16-AM-10_59_04
Last ObjectModification: 2015_12_29-AM-09_18_05

Theory : event-ordering


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