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Step * 1 3 of Lemma qadd_grp_wf


Inverse(ℚ;λx,y. (x + y);0;λx.-(x))
BY
{ (RepUR ``inverse`` 0 THEN Auto) }

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Latex:

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Latex:

Inverse(\mBbbQ{};\mlambda{}x,y.  (x  +  y);0;\mlambda{}x.-(x))


By

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Latex:
(RepUR  ``inverse``  0  THEN  Auto)

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