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Step * 1 1 2 1 1 1 1 of Lemma fps-div-coeff-property

.....assertion..... 
1. X : Type
2. eq : EqDecider(X)
3. b : bag(X)
4. valueall-type(X)
⊢ {<{}, b>} = [x∈bag-partitions(eq;b)|bag-eq(eq;fst(x);{})] ∈ bag(bag(X) × bag(X))
BY
{ xxx(Symmetry THEN BLemma `bag-partitions-with-one-given`   THEN Auto)xxx }

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Latex:

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Latex:
.....assertion..... 
1.  X  :  Type
2.  eq  :  EqDecider(X)
3.  b  :  bag(X)
4.  valueall-type(X)
\mvdash{}  \{<\{\},  b>\}  =  [x\mmember{}bag-partitions(eq;b)|bag-eq(eq;fst(x);\{\})]


By

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Latex:
xxx(Symmetry  THEN  BLemma  `bag-partitions-with-one-given`      THEN  Auto)xxx

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