Step |
Hyp |
Ref |
Expression |
1 |
|
msrfval.v |
⊢ 𝑉 = ( mVars ‘ 𝑇 ) |
2 |
|
msrfval.p |
⊢ 𝑃 = ( mPreSt ‘ 𝑇 ) |
3 |
|
msrfval.r |
⊢ 𝑅 = ( mStRed ‘ 𝑇 ) |
4 |
|
fveq2 |
⊢ ( 𝑡 = 𝑇 → ( mPreSt ‘ 𝑡 ) = ( mPreSt ‘ 𝑇 ) ) |
5 |
4 2
|
eqtr4di |
⊢ ( 𝑡 = 𝑇 → ( mPreSt ‘ 𝑡 ) = 𝑃 ) |
6 |
|
fveq2 |
⊢ ( 𝑡 = 𝑇 → ( mVars ‘ 𝑡 ) = ( mVars ‘ 𝑇 ) ) |
7 |
6 1
|
eqtr4di |
⊢ ( 𝑡 = 𝑇 → ( mVars ‘ 𝑡 ) = 𝑉 ) |
8 |
7
|
imaeq1d |
⊢ ( 𝑡 = 𝑇 → ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) = ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) ) |
9 |
8
|
unieqd |
⊢ ( 𝑡 = 𝑇 → ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) = ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) ) |
10 |
9
|
csbeq1d |
⊢ ( 𝑡 = 𝑇 → ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) = ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) |
11 |
10
|
ineq2d |
⊢ ( 𝑡 = 𝑇 → ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) = ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) ) |
12 |
11
|
oteq1d |
⊢ ( 𝑡 = 𝑇 → 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 = 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |
13 |
12
|
csbeq2dv |
⊢ ( 𝑡 = 𝑇 → ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 = ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |
14 |
13
|
csbeq2dv |
⊢ ( 𝑡 = 𝑇 → ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 = ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |
15 |
5 14
|
mpteq12dv |
⊢ ( 𝑡 = 𝑇 → ( 𝑠 ∈ ( mPreSt ‘ 𝑡 ) ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) = ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) ) |
16 |
|
df-msr |
⊢ mStRed = ( 𝑡 ∈ V ↦ ( 𝑠 ∈ ( mPreSt ‘ 𝑡 ) ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( ( mVars ‘ 𝑡 ) “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) ) |
17 |
15 16 2
|
mptfvmpt |
⊢ ( 𝑇 ∈ V → ( mStRed ‘ 𝑇 ) = ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) ) |
18 |
|
mpt0 |
⊢ ( 𝑠 ∈ ∅ ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) = ∅ |
19 |
18
|
eqcomi |
⊢ ∅ = ( 𝑠 ∈ ∅ ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |
20 |
|
fvprc |
⊢ ( ¬ 𝑇 ∈ V → ( mStRed ‘ 𝑇 ) = ∅ ) |
21 |
|
fvprc |
⊢ ( ¬ 𝑇 ∈ V → ( mPreSt ‘ 𝑇 ) = ∅ ) |
22 |
2 21
|
syl5eq |
⊢ ( ¬ 𝑇 ∈ V → 𝑃 = ∅ ) |
23 |
22
|
mpteq1d |
⊢ ( ¬ 𝑇 ∈ V → ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) = ( 𝑠 ∈ ∅ ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) ) |
24 |
19 20 23
|
3eqtr4a |
⊢ ( ¬ 𝑇 ∈ V → ( mStRed ‘ 𝑇 ) = ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) ) |
25 |
17 24
|
pm2.61i |
⊢ ( mStRed ‘ 𝑇 ) = ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |
26 |
3 25
|
eqtri |
⊢ 𝑅 = ( 𝑠 ∈ 𝑃 ↦ ⦋ ( 2nd ‘ ( 1st ‘ 𝑠 ) ) / ℎ ⦌ ⦋ ( 2nd ‘ 𝑠 ) / 𝑎 ⦌ 〈 ( ( 1st ‘ ( 1st ‘ 𝑠 ) ) ∩ ⦋ ∪ ( 𝑉 “ ( ℎ ∪ { 𝑎 } ) ) / 𝑧 ⦌ ( 𝑧 × 𝑧 ) ) , ℎ , 𝑎 〉 ) |