Step
*
of Lemma
q-rel-decider_wf
∀r:ℤ. ∀x:ℚ. (q-rel-decider(r;x) ∈ Dec(q-rel(r;x)))
BY
{ (Auto
THEN RepUR ``q-rel q-rel-decider`` 0
THEN (BoolCase ⌜(r =z 0)⌝⋅ THENA Auto)
THEN (BoolCase ⌜(r =z 1)⌝⋅ THENA Auto)
THEN RepUR ``decidable or not implies it`` 0
THEN Repeat (AutoSplit)
THEN Auto
THEN Try ((BLemma `qle_witness` ORELSE BLemma `qless_witness`))
THEN Auto
THEN Try ((FLemma `qless_complement_qorder` [4] THEN Auto THEN RelRST THEN Auto))) }
Latex:
Latex:
\mforall{}r:\mBbbZ{}. \mforall{}x:\mBbbQ{}. (q-rel-decider(r;x) \mmember{} Dec(q-rel(r;x)))
By
Latex:
(Auto
THEN RepUR ``q-rel q-rel-decider`` 0
THEN (BoolCase \mkleeneopen{}(r =\msubz{} 0)\mkleeneclose{}\mcdot{} THENA Auto)
THEN (BoolCase \mkleeneopen{}(r =\msubz{} 1)\mkleeneclose{}\mcdot{} THENA Auto)
THEN RepUR ``decidable or not implies it`` 0
THEN Repeat (AutoSplit)
THEN Auto
THEN Try ((BLemma `qle\_witness` ORELSE BLemma `qless\_witness`))
THEN Auto
THEN Try ((FLemma `qless\_complement\_qorder` [4] THEN Auto THEN RelRST THEN Auto)))
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