Nuprl Lemma : rv-add-swap
∀[rv:RealVectorSpace]. ∀[x,y,z:Point]. x + y + z ≡ x + z + y
Proof
Definitions occuring in Statement :
rv-add: x + y,
real-vector-space: RealVectorSpace,
ss-eq: x ≡ y,
ss-point: Point,
uall: ∀[x:A]. B[x]
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
ss-eq: x ≡ y,
not: ¬A,
implies: P ⇒ Q,
false: False,
subtype_rel: A ⊆r B,
prop: ℙ,
all: ∀x:A. B[x],
uimplies: b supposing a,
uiff: uiff(P;Q),
and: P ∧ Q,
rev_uimplies: rev_uimplies(P;Q)
Lemmas referenced :
ss-sep_wf,
real-vector-space_subtype1,
rv-add_wf,
ss-point_wf,
real-vector-space_wf,
ss-eq_weakening,
rv-add-comm,
ss-eq_functionality,
ss-eq_inversion,
rv-add-assoc,
rv-add_functionality
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation,
introduction,
cut,
sqequalRule,
sqequalHypSubstitution,
lambdaEquality,
dependent_functionElimination,
thin,
hypothesisEquality,
because_Cache,
extract_by_obid,
isectElimination,
applyEquality,
hypothesis,
isect_memberEquality,
voidElimination,
independent_functionElimination,
independent_isectElimination,
productElimination
Latex:
\mforall{}[rv:RealVectorSpace]. \mforall{}[x,y,z:Point]. x + y + z \mequiv{} x + z + y
Date html generated:
2017_10_04-PM-11_50_19
Last ObjectModification:
2017_06_22-PM-06_44_18
Theory : inner!product!spaces
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