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Step * of Lemma bag-combine-single-right-as-map

∀[bs,f:Top].  (⋃x∈bs.{f[x]} ~ bag-map(λx.f[x];bs))
BY
{ (RepUR ``bag-map bag-combine bag-union single-bag`` 0⋅ THEN RWO "concat-map-single" 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[bs,f:Top].    (\mcup{}x\mmember{}bs.\{f[x]\}  \msim{}  bag-map(\mlambda{}x.f[x];bs))


By

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Latex:
(RepUR  ``bag-map  bag-combine  bag-union  single-bag``  0\mcdot{}  THEN  RWO  "concat-map-single"  0  THEN  Auto)

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