Nuprl Lemma : rank-comm

[P:pi_term()]. ∀[pre:pi_prefix()].  (pi-rank(picomm(pre;P)) (pi-rank(P) 1) ∈ ℕ)


Proof




Definitions occuring in Statement :  pi-rank: pi-rank(p) picomm: picomm(pre;body) pi_term: pi_term() pi_prefix: pi_prefix() nat: uall: [x:A]. B[x] add: m natural_number: $n equal: t ∈ T
Definitions unfolded in proof :  uall: [x:A]. B[x] member: t ∈ T all: x:A. B[x] decidable: Dec(P) or: P ∨ Q nat: guard: {T} prop: ge: i ≥  uimplies: supposing a satisfiable_int_formula: satisfiable_int_formula(fmla) exists: x:A. B[x] false: False implies:  Q not: ¬A top: Top and: P ∧ Q pi-rank: pi-rank(p) pi_term_ind: pi_term_ind(v;zero;pre,body,rec1....;left,right,rec2,rec3....;left,right,rec4,rec5....;body,rec6....;name,body,rec7....) picomm: picomm(pre;body) subtype_rel: A ⊆B

Latex:
\mforall{}[P:pi\_term()].  \mforall{}[pre:pi\_prefix()].    (pi-rank(picomm(pre;P))  =  (pi-rank(P)  +  1))



Date html generated: 2016_05_17-AM-11_23_42
Last ObjectModification: 2016_01_18-AM-07_48_39

Theory : event-logic-applications


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