Nuprl Lemma : diff_cons_lemma
∀bs,b,as,s:Top. (as - [b / bs] ~ (as \ b) - bs)
Proof
Definitions occuring in Statement :
diff: as - bs,
remove1: as \ a,
cons: [a / b],
top: Top,
all: ∀x:A. B[x],
sqequal: s ~ t
Definitions unfolded in proof :
all: ∀x:A. B[x],
diff: as - bs,
ycomb: Y,
so_lambda: so_lambda(x,y,z.t[x; y; z]),
member: t ∈ T,
top: Top,
so_apply: x[s1;s2;s3]
Lemmas referenced :
list_ind_cons_lemma,
top_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
lambdaFormation,
cut,
sqequalRule,
lemma_by_obid,
sqequalHypSubstitution,
dependent_functionElimination,
thin,
isect_memberEquality,
voidElimination,
voidEquality,
hypothesis
Latex:
\mforall{}bs,b,as,s:Top. (as - [b / bs] \msim{} (as \mbackslash{} b) - bs)
Date html generated:
2016_05_16-AM-07_40_07
Last ObjectModification:
2015_12_28-PM-05_43_20
Theory : list_2
Home
Index