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Step * of Lemma nat_inc

ℕ ⊆r |(<ℤ+>↓hgrp)|
BY
{ (Computation THEN Reduce 0 THEN RepUR ``int_add_grp grp_leq`` 0 THEN Auto) }

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Latex:

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Latex:
\mBbbN{}  \msubseteq{}r  |(<\mBbbZ{}+>\mdownarrow{}hgrp)|


By

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Latex:
(Computation  THEN  Reduce  0  THEN  RepUR  ``int\_add\_grp  grp\_leq``  0  THEN  Auto)

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