Nuprl Lemma : halfpi_wf
π/2 ∈ ℝ
Proof
Definitions occuring in Statement :
halfpi: π/2,
real: ℝ,
member: t ∈ T
Definitions unfolded in proof :
member: t ∈ T,
subtype_rel: A ⊆r B,
uall: ∀[x:A]. B[x],
prop: ℙ
Lemmas referenced :
halfpi_wf1,
real_wf,
req_wf,
half-pi_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
cut,
introduction,
extract_by_obid,
hypothesis,
applyEquality,
thin,
lambdaEquality,
setElimination,
rename,
hypothesisEquality,
setEquality,
sqequalHypSubstitution,
isectElimination,
sqequalRule
Latex:
\mpi{}/2 \mmember{} \mBbbR{}
Date html generated:
2016_10_26-PM-00_22_57
Last ObjectModification:
2016_09_12-PM-05_42_41
Theory : reals_2
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