Nuprl Lemma : rv-between-translation
∀n:ℕ. ∀a,b,c,z:ℝ^n.  (z + a-z + b-z + c 
⇐⇒ a-b-c)
Proof
Definitions occuring in Statement : 
rv-between: a-b-c
, 
real-vec-add: X + Y
, 
real-vec: ℝ^n
, 
nat: ℕ
, 
all: ∀x:A. B[x]
, 
iff: P 
⇐⇒ Q
Definitions unfolded in proof : 
all: ∀x:A. B[x]
, 
iff: P 
⇐⇒ Q
, 
and: P ∧ Q
, 
implies: P 
⇒ Q
, 
rv-between: a-b-c
, 
real-vec-between: a-b-c
, 
exists: ∃x:A. B[x]
, 
member: t ∈ T
, 
req-vec: req-vec(n;x;y)
, 
real-vec-add: X + Y
, 
real-vec-mul: a*X
, 
uall: ∀[x:A]. B[x]
, 
nat: ℕ
, 
prop: ℙ
, 
cand: A c∧ B
, 
real-vec-sep: a ≠ b
, 
rev_implies: P 
⇐ Q
, 
subtype_rel: A ⊆r B
, 
uimplies: b supposing a
, 
real-vec: ℝ^n
, 
uiff: uiff(P;Q)
, 
itermConstant: "const"
, 
req_int_terms: t1 ≡ t2
, 
false: False
, 
not: ¬A
, 
top: Top
, 
rev_uimplies: rev_uimplies(P;Q)
Lemmas referenced : 
int_seg_wf, 
i-member_wf, 
rooint_wf, 
int-to-real_wf, 
req-vec_wf, 
real-vec-add_wf, 
real-vec-mul_wf, 
rsub_wf, 
rv-between_wf, 
real-vec_wf, 
nat_wf, 
real-vec-dist_wf, 
real_wf, 
rleq_wf, 
rless_functionality, 
req_weakening, 
real-vec-dist-translation2, 
radd-preserves-req, 
radd_wf, 
rmul_wf, 
rminus_wf, 
req-implies-req, 
real_term_polynomial, 
itermSubtract_wf, 
itermAdd_wf, 
itermVar_wf, 
itermMultiply_wf, 
itermMinus_wf, 
itermConstant_wf, 
real_term_value_const_lemma, 
real_term_value_sub_lemma, 
real_term_value_add_lemma, 
real_term_value_var_lemma, 
real_term_value_mul_lemma, 
real_term_value_minus_lemma, 
req-iff-rsub-is-0, 
req_functionality, 
req_transitivity, 
radd_functionality, 
rminus_functionality
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
lambdaFormation, 
independent_pairFormation, 
sqequalHypSubstitution, 
productElimination, 
thin, 
promote_hyp, 
dependent_pairFormation, 
hypothesisEquality, 
hypothesis, 
cut, 
dependent_functionElimination, 
sqequalRule, 
introduction, 
extract_by_obid, 
isectElimination, 
natural_numberEquality, 
setElimination, 
rename, 
productEquality, 
applyEquality, 
lambdaEquality, 
setEquality, 
because_Cache, 
independent_isectElimination, 
independent_functionElimination, 
computeAll, 
int_eqEquality, 
intEquality, 
isect_memberEquality, 
voidElimination, 
voidEquality
Latex:
\mforall{}n:\mBbbN{}.  \mforall{}a,b,c,z:\mBbbR{}\^{}n.    (z  +  a-z  +  b-z  +  c  \mLeftarrow{}{}\mRightarrow{}  a-b-c)
Date html generated:
2017_10_03-AM-11_10_40
Last ObjectModification:
2017_07_28-AM-08_23_20
Theory : reals
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