Nuprl Lemma : rng_sum_unroll_empty
∀[r:Rng]. ∀[i,j:ℤ]. ∀[E:{i..j-} ⟶ |r|]. ((Σ(r) i ≤ k < j. E[k]) = 0 ∈ |r|) supposing j ≤ i
Proof
Definitions occuring in Statement :
rng_sum: rng_sum,
rng: Rng,
rng_zero: 0,
rng_car: |r|,
int_seg: {i..j-},
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
so_apply: x[s],
le: A ≤ B,
function: x:A ⟶ B[x],
int: ℤ,
equal: s = t ∈ T
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
subtype_rel: A ⊆r B,
grp: Group{i},
mon: Mon,
imon: IMonoid,
prop: ℙ,
rng_sum: rng_sum,
add_grp_of_rng: r↓+gp,
grp_car: |g|,
pi1: fst(t),
grp_id: e,
pi2: snd(t),
uimplies: b supposing a
Lemmas referenced :
mon_itop_unroll_empty,
add_grp_of_rng_wf_a,
grp_sig_wf,
monoid_p_wf,
grp_car_wf,
grp_op_wf,
grp_id_wf,
inverse_wf,
grp_inv_wf,
rng_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation_alt,
introduction,
cut,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
hypothesis,
applyEquality,
sqequalRule,
lambdaEquality_alt,
setElimination,
rename,
setIsType,
universeIsType,
because_Cache,
isect_memberEquality_alt,
axiomEquality,
isectIsTypeImplies,
inhabitedIsType
Latex:
\mforall{}[r:Rng]. \mforall{}[i,j:\mBbbZ{}]. \mforall{}[E:\{i..j\msupminus{}\} {}\mrightarrow{} |r|]. ((\mSigma{}(r) i \mleq{} k < j. E[k]) = 0) supposing j \mleq{} i
Date html generated:
2019_10_15-AM-10_34_00
Last ObjectModification:
2019_08_13-PM-05_09_23
Theory : rings_1
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