Nuprl Lemma : arcsine-nonneg
∀[x:{x:ℝ| x ∈ [r0, r1)} ]. (r0 ≤ arcsine(x))
Proof
Definitions occuring in Statement : 
arcsine: arcsine(x)
, 
rcoint: [l, u)
, 
i-member: r ∈ I
, 
rleq: x ≤ y
, 
int-to-real: r(n)
, 
real: ℝ
, 
uall: ∀[x:A]. B[x]
, 
set: {x:A| B[x]} 
, 
natural_number: $n
Definitions unfolded in proof : 
guard: {T}
, 
rge: x ≥ y
, 
uimplies: b supposing a
, 
true: True
, 
less_than': less_than'(a;b)
, 
less_than: a < b
, 
rev_implies: P 
⇐ Q
, 
iff: P 
⇐⇒ Q
, 
so_apply: x[s]
, 
so_lambda: λ2x.t[x]
, 
prop: ℙ
, 
squash: ↓T
, 
implies: P 
⇒ Q
, 
sq_stable: SqStable(P)
, 
top: Top
, 
all: ∀x:A. B[x]
, 
cand: A c∧ B
, 
and: P ∧ Q
, 
member: t ∈ T
, 
uall: ∀[x:A]. B[x]
, 
subtype_rel: A ⊆r B
, 
strictly-increasing-on-interval: f[x] strictly-increasing for x ∈ I
, 
not: ¬A
, 
false: False
, 
req_int_terms: t1 ≡ t2
, 
uiff: uiff(P;Q)
Lemmas referenced : 
rleq_weakening_equal, 
rless_functionality_wrt_implies, 
rless-int, 
rcoint_wf, 
i-member_wf, 
real_wf, 
set_wf, 
rless_wf, 
int-to-real_wf, 
member_rcoint_lemma, 
sq_stable__rless, 
arcsine-bounds, 
member_rooint_lemma, 
arcsine_wf, 
sq_stable__rleq, 
halfpi_wf, 
rminus_wf, 
rooint_wf, 
rsin-strictly-increasing, 
not-rless, 
real_term_value_const_lemma, 
real_term_value_var_lemma, 
real_term_value_minus_lemma, 
real_term_value_mul_lemma, 
real_term_value_sub_lemma, 
real_polynomial_null, 
req-iff-rsub-is-0, 
itermConstant_wf, 
itermVar_wf, 
itermMinus_wf, 
itermMultiply_wf, 
itermSubtract_wf, 
halfpi-positive, 
rmul-zero-both, 
rmul_wf, 
rless_functionality, 
rmul_reverses_rless_iff, 
rsin0, 
rsin-arcsine, 
rsin_wf, 
rless_irreflexivity, 
rless_transitivity1
Rules used in proof : 
independent_isectElimination, 
because_Cache, 
lambdaEquality, 
productEquality, 
independent_pairFormation, 
imageElimination, 
baseClosed, 
imageMemberEquality, 
sqequalRule, 
productElimination, 
independent_functionElimination, 
natural_numberEquality, 
minusEquality, 
isectElimination, 
voidEquality, 
voidElimination, 
isect_memberEquality, 
dependent_functionElimination, 
extract_by_obid, 
introduction, 
hypothesis, 
sqequalHypSubstitution, 
hypothesisEquality, 
rename, 
thin, 
setElimination, 
dependent_set_memberEquality, 
cut, 
isect_memberFormation, 
sqequalReflexivity, 
computationStep, 
sqequalTransitivity, 
sqequalSubstitution, 
setEquality, 
applyEquality, 
equalitySymmetry, 
equalityTransitivity, 
lambdaFormation, 
intEquality, 
int_eqEquality, 
approximateComputation
Latex:
\mforall{}[x:\{x:\mBbbR{}|  x  \mmember{}  [r0,  r1)\}  ].  (r0  \mleq{}  arcsine(x))
Date html generated:
2017_10_04-PM-10_48_24
Last ObjectModification:
2017_08_01-PM-10_03_47
Theory : reals_2
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