Nuprl Lemma : proj-incidence_symmetry
∀[n:ℕ]. ∀[p,v:ℙ^n].  uiff(v on p;p on v)
Proof
Definitions occuring in Statement : 
proj-incidence: v on p, 
real-proj: ℙ^n, 
nat: ℕ, 
uiff: uiff(P;Q), 
uall: ∀[x:A]. B[x]
Definitions unfolded in proof : 
member: t ∈ T, 
uall: ∀[x:A]. B[x], 
nat: ℕ, 
ge: i ≥ j , 
all: ∀x:A. B[x], 
decidable: Dec(P), 
or: P ∨ Q, 
uimplies: b supposing a, 
not: ¬A, 
implies: P ⇒ Q, 
satisfiable_int_formula: satisfiable_int_formula(fmla), 
exists: ∃x:A. B[x], 
false: False, 
top: Top, 
and: P ∧ Q, 
prop: ℙ, 
real-proj: ℙ^n, 
subtype_rel: A ⊆r B, 
uiff: uiff(P;Q), 
proj-incidence: v on p, 
dot-product: x⋅y, 
so_lambda: λ2x.t[x], 
real-vec: ℝ^n, 
int_seg: {i..j-}, 
lelt: i ≤ j < k, 
le: A ≤ B, 
less_than: a < b, 
so_apply: x[s], 
pointwise-req: x[k] = y[k] for k ∈ [n,m], 
proj-rev: proj-rev(n;p), 
bool: 𝔹, 
unit: Unit, 
it: ⋅, 
btrue: tt, 
ifthenelse: if b then t else f fi , 
bfalse: ff, 
sq_type: SQType(T), 
guard: {T}, 
bnot: ¬bb, 
assert: ↑b, 
req_int_terms: t1 ≡ t2
Lemmas referenced : 
dot-product_wf, 
nat_properties, 
decidable__le, 
full-omega-unsat, 
intformand_wf, 
intformnot_wf, 
intformle_wf, 
itermConstant_wf, 
itermAdd_wf, 
itermVar_wf, 
int_formula_prop_and_lemma, 
int_formula_prop_not_lemma, 
int_formula_prop_le_lemma, 
int_term_value_constant_lemma, 
int_term_value_add_lemma, 
int_term_value_var_lemma, 
int_formula_prop_wf, 
le_wf, 
proj-rev_wf, 
real-proj_wf, 
int-to-real_wf, 
proj-incidence_wf, 
nat_wf, 
req_witness, 
rsum_functionality, 
subtract_wf, 
rmul_wf, 
add-subtract-cancel, 
decidable__lt, 
intformless_wf, 
int_formula_prop_less_lemma, 
lelt_wf, 
int_seg_wf, 
lt_int_wf, 
bool_wf, 
eqtt_to_assert, 
assert_of_lt_int, 
rmul_comm, 
eqff_to_assert, 
equal_wf, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
less_than_wf, 
rminus_wf, 
itermSubtract_wf, 
itermMultiply_wf, 
itermMinus_wf, 
req-iff-rsub-is-0, 
real_polynomial_null, 
real_term_value_sub_lemma, 
real_term_value_mul_lemma, 
real_term_value_var_lemma, 
real_term_value_minus_lemma, 
real_term_value_const_lemma, 
req_inversion, 
req_transitivity
Rules used in proof : 
cut, 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
introduction, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
dependent_set_memberEquality, 
addEquality, 
setElimination, 
rename, 
hypothesisEquality, 
hypothesis, 
natural_numberEquality, 
dependent_functionElimination, 
unionElimination, 
independent_isectElimination, 
approximateComputation, 
independent_functionElimination, 
dependent_pairFormation, 
lambdaEquality, 
int_eqEquality, 
intEquality, 
isect_memberEquality, 
voidElimination, 
voidEquality, 
sqequalRule, 
independent_pairFormation, 
applyEquality, 
because_Cache, 
isect_memberFormation, 
productElimination, 
independent_pairEquality, 
equalityTransitivity, 
equalitySymmetry, 
lambdaFormation, 
equalityElimination, 
promote_hyp, 
instantiate, 
cumulativity
Latex:
\mforall{}[n:\mBbbN{}].  \mforall{}[p,v:\mBbbP{}\^{}n].    uiff(v  on  p;p  on  v)
Date html generated:
2017_10_05-AM-00_19_42
Last ObjectModification:
2017_06_17-AM-10_08_48
Theory : inner!product!spaces
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