Nuprl Lemma : qmax_wf
∀[x,y:ℚ]. (qmax(x;y) ∈ ℚ)
Proof
Definitions occuring in Statement :
qmax: qmax(x;y),
rationals: ℚ,
uall: ∀[x:A]. B[x],
member: t ∈ T
Definitions unfolded in proof :
qmax: qmax(x;y),
uall: ∀[x:A]. B[x],
member: t ∈ T
Lemmas referenced :
ifthenelse_wf,
q_le_wf,
rationals_wf
Rules used in proof :
sqequalSubstitution,
sqequalRule,
sqequalReflexivity,
sqequalTransitivity,
computationStep,
isect_memberFormation,
introduction,
cut,
lemma_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
hypothesis,
axiomEquality,
equalityTransitivity,
equalitySymmetry,
isect_memberEquality,
because_Cache
Latex:
\mforall{}[x,y:\mBbbQ{}]. (qmax(x;y) \mmember{} \mBbbQ{})
Date html generated:
2016_05_15-PM-10_43_00
Last ObjectModification:
2015_12_27-PM-07_56_17
Theory : rationals
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