Nuprl Lemma : pairwise-nil
∀[P:Top]. ((∀x,y∈[].  P[x;y]) 
⇐⇒ True)
Proof
Definitions occuring in Statement : 
pairwise: (∀x,y∈L.  P[x; y])
, 
nil: []
, 
uall: ∀[x:A]. B[x]
, 
top: Top
, 
so_apply: x[s1;s2]
, 
iff: P 
⇐⇒ Q
, 
true: True
Definitions unfolded in proof : 
pairwise: (∀x,y∈L.  P[x; y])
, 
select: L[n]
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
uimplies: b supposing a
, 
all: ∀x:A. B[x]
, 
nil: []
, 
it: ⋅
, 
so_lambda: λ2x y.t[x; y]
, 
top: Top
, 
so_apply: x[s1;s2]
, 
iff: P 
⇐⇒ Q
, 
and: P ∧ Q
, 
implies: P 
⇒ Q
, 
true: True
, 
prop: ℙ
, 
so_lambda: λ2x.t[x]
, 
int_seg: {i..j-}
, 
guard: {T}
, 
lelt: i ≤ j < k
, 
satisfiable_int_formula: satisfiable_int_formula(fmla)
, 
exists: ∃x:A. B[x]
, 
false: False
, 
not: ¬A
, 
so_apply: x[s]
, 
rev_implies: P 
⇐ Q
Lemmas referenced : 
top_wf, 
true_wf, 
int_formula_prop_wf, 
int_term_value_constant_lemma, 
int_formula_prop_le_lemma, 
int_term_value_var_lemma, 
int_formula_prop_less_lemma, 
int_formula_prop_and_lemma, 
itermConstant_wf, 
intformle_wf, 
itermVar_wf, 
intformless_wf, 
intformand_wf, 
satisfiable-full-omega-tt, 
int_seg_properties, 
int_seg_wf, 
all_wf, 
base_wf, 
stuck-spread, 
length_of_nil_lemma
Rules used in proof : 
sqequalSubstitution, 
sqequalRule, 
sqequalReflexivity, 
sqequalTransitivity, 
computationStep, 
cut, 
lemma_by_obid, 
hypothesis, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
baseClosed, 
independent_isectElimination, 
lambdaFormation, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
isect_memberFormation, 
independent_pairFormation, 
natural_numberEquality, 
because_Cache, 
lambdaEquality, 
setElimination, 
rename, 
hypothesisEquality, 
productElimination, 
dependent_pairFormation, 
int_eqEquality, 
intEquality, 
dependent_functionElimination, 
computeAll
Latex:
\mforall{}[P:Top].  ((\mforall{}x,y\mmember{}[].    P[x;y])  \mLeftarrow{}{}\mRightarrow{}  True)
Date html generated:
2016_05_14-PM-01_49_31
Last ObjectModification:
2016_01_15-AM-08_16_46
Theory : list_1
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