Step * 1 of Lemma posint_is_ufm


Cancel(|<ℤ+,*>|;|<ℤ+,*>|;*)
BY
((BLemma `posint_cancel`) THEN Auto) }


Latex:


Latex:

Cancel(|<\mBbbZ{}\msupplus{},*>|;|<\mBbbZ{}\msupplus{},*>|;*)


By


Latex:
((BLemma  `posint\_cancel`)  THEN  Auto)




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