Step * 3 1 of Lemma generated-subspace-is-subspace


1. Rng
2. vs VectorSpace(K)
3. Point(vs) ⟶ ℙ
4. Point(vs)
5. Point(vs)
6. 0 ∈ Point(vs)
7. l_tree(x:Point(vs) × P[x];|K|)
8. vs-tree-val(vs;t) ∈ Point(vs)
9. |K|
10. Point(vs)
11. vs-tree-val(vs;t) vs-tree-val(vs;t) v ∈ Point(vs)
⊢ vs-tree-val(vs;t) vs-tree-val(vs;t) ∈ Point(vs)
BY
(Subst' vs-tree-val(vs;t) vs-tree-val(vs;t) ∈ Point(vs) THEN Auto) }


Latex:


Latex:

1.  K  :  Rng
2.  vs  :  VectorSpace(K)
3.  P  :  Point(vs)  {}\mrightarrow{}  \mBbbP{}
4.  w  :  Point(vs)
5.  y  :  Point(vs)
6.  w  =  0
7.  t  :  l\_tree(x:Point(vs)  \mtimes{}  P[x];|K|)
8.  y  =  vs-tree-val(vs;t)
9.  k  :  |K|
10.  v  :  Point(vs)
11.  vs-tree-val(vs;t)  +  vs-tree-val(vs;t)  =  v
\mvdash{}  k  *  vs-tree-val(vs;t)  =  k  *  0  *  v  +  vs-tree-val(vs;t)


By


Latex:
(Subst'  0  *  v  +  vs-tree-val(vs;t)  =  vs-tree-val(vs;t)  0  THEN  Auto)




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