Nuprl Lemma : hdf-buffer-transformation2
∀[init,L,G:Top]. ∀[m:ℕ].
(hdf-buffer(fix((λmk-hdf.(inl (λa.cbva_seq(L[a]; λg.<mk-hdf, G[g]>; m)))));init)
~ fix((λmk-hdf,s. (inl (λa.cbva_seq(λn.if (n =z m) then mk_lambdas_fun(λg.∪f∈G[g].∪b∈s.f b;m) else L[a] n fi ;
λg.<mk-hdf if bag-null(select_fun_last(g;m)) then s else select_fun_last(g;m) fi
, select_fun_last(g;m)
>; m + 1)))))
init)
Proof
Definitions occuring in Statement :
hdf-buffer: hdf-buffer(X;bs),
nat: ℕ,
ifthenelse: if b then t else f fi ,
eq_int: (i =z j),
uall: ∀[x:A]. B[x],
top: Top,
so_apply: x[s],
apply: f a,
fix: fix(F),
lambda: λx.A[x],
pair: <a, b>,
inl: inl x,
add: n + m,
natural_number: $n,
sqequal: s ~ t,
bag-combine: ∪x∈bs.f[x],
bag-null: bag-null(bs),
select_fun_last: select_fun_last(g;m),
mk_lambdas_fun: mk_lambdas_fun(F;m),
cbva_seq: cbva_seq(L; F; m)
Lemmas :
lifting-strict-spread,
has-value_wf_base,
base_wf,
is-exception_wf,
lifting-strict-int_eq,
top_wf,
lifting-strict-decide,
strict4-spread,
lifting-strict-callbyvalueall,
nat_properties,
less_than_transitivity1,
less_than_irreflexivity,
ge_wf,
less_than_wf,
strictness-apply,
lifting-strict-less,
lifting-strict-ispair,
lifting-strict-isaxiom,
strictness-decide,
bottom-sqle,
decidable__le,
subtract_wf,
false_wf,
not-ge-2,
less-iff-le,
condition-implies-le,
minus-one-mul,
zero-add,
minus-add,
minus-minus,
add-associates,
add-swap,
add-commutes,
add_functionality_wrt_le,
add-zero,
le-add-cancel,
fun_exp_unroll,
le_weakening2,
le_wf,
eq_int_wf,
bool_wf,
eqtt_to_assert,
assert_of_eq_int,
le_weakening,
eqff_to_assert,
equal_wf,
bool_cases_sqequal,
subtype_base_sq,
bool_subtype_base,
assert-bnot,
neg_assert_of_eq_int,
nat_wf,
cbva_seq-spread,
cbva_seq_extend,
set_subtype_base,
int_subtype_base
\mforall{}[init,L,G:Top]. \mforall{}[m:\mBbbN{}].
(hdf-buffer(fix((\mlambda{}mk-hdf.(inl (\mlambda{}a.cbva\_seq(L[a]; \mlambda{}g.<mk-hdf, G[g]> m)))));init)
\msim{} fix((\mlambda{}mk-hdf,s. (inl (\mlambda{}a.cbva\_seq(\mlambda{}n.if (n =\msubz{} m)
then mk\_lambdas\_fun(\mlambda{}g.\mcup{}f\mmember{}G[g].\mcup{}b\mmember{}s.f b;m)
else L[a] n
fi ; \mlambda{}g.<mk-hdf
if bag-null(select\_fun\_last(g;m))
then s
else select\_fun\_last(g;m)
fi
, select\_fun\_last(g;m)
> m + 1)))))
init)
Date html generated:
2015_07_17-AM-08_08_48
Last ObjectModification:
2015_06_19-PM-01_00_23
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