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Step * 1 of Lemma mk-rational_wf


1. a : ℤ
2. b : ℤ-o
⊢ <a, b> ∈ ℤ ⋃ (ℤ × ℤ-o)
BY
{ (BUnionRight THEN Auto) }

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Latex:

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Latex:

1.  a  :  \mBbbZ{}
2.  b  :  \mBbbZ{}\msupminus{}\msupzero{}
\mvdash{}  <a,  b>  \mmember{}  \mBbbZ{}  \mcup{}  (\mBbbZ{}  \mtimes{}  \mBbbZ{}\msupminus{}\msupzero{})


By

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Latex:
(BUnionRight  THEN  Auto)

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