Step * 1 of Lemma fps-compose-single-disjoint


1. Type
2. valueall-type(X)
3. eq EqDecider(X)
4. CRng
5. X
6. PowerSeries(X;r)
7. ¬x ↓∈ []
⊢ <[]>(x:=f) = <[]> ∈ PowerSeries(X;r)
BY
xxx(Subst ⌜<[]> 1 ∈ PowerSeries(X;r)⌝ 0⋅ THEN Auto)xxx }

1
.....equality..... 
1. Type
2. valueall-type(X)
3. eq EqDecider(X)
4. CRng
5. X
6. PowerSeries(X;r)
7. ¬x ↓∈ []
⊢ <[]> 1 ∈ PowerSeries(X;r)


Latex:


Latex:

1.  X  :  Type
2.  valueall-type(X)
3.  eq  :  EqDecider(X)
4.  r  :  CRng
5.  x  :  X
6.  f  :  PowerSeries(X;r)
7.  \mneg{}x  \mdownarrow{}\mmember{}  []
\mvdash{}  <[]>(x:=f)  =  <[]>


By


Latex:
xxx(Subst  \mkleeneopen{}<[]>  =  1\mkleeneclose{}  0\mcdot{}  THEN  Auto)xxx




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