Step * of Lemma better-gcd_wf

[x,y:ℤ].  (better-gcd(x;y) ∈ ℤ)
BY
(Auto THEN RWO "better-gcd-gcd" THEN Auto) }


Latex:


Latex:
\mforall{}[x,y:\mBbbZ{}].    (better-gcd(x;y)  \mmember{}  \mBbbZ{})


By


Latex:
(Auto  THEN  RWO  "better-gcd-gcd"  0  THEN  Auto)




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