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Step * of Lemma rabs_functionality

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∀[x,y:ℝ].  |x| = |y| supposing x = y
BY
{ (RWO "rabs-as-rmax" 0 THENA Auto) }

1
∀[x,y:ℝ].  rmax(x;-(x)) = rmax(y;-(y)) supposing x = y

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Latex:

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Latex:
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\mforall{}[x,y:\mBbbR{}].    |x|  =  |y|  supposing  x  =  y


By

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Latex:
(RWO  "rabs-as-rmax"  0  THENA  Auto)

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