Proof of Theorem nnmordi
| Step | Hyp | Ref
| Expression |
| 1 | | opreq2 3007 |
. . . . . . . . . . . . 13
⊢ (x =
suc A → (C ·o x) = (C
·o suc A)) |
| 2 | 1 | sseq2d 1528 |
. . . . . . . . . . . 12
⊢ (x =
suc A → ((C ·o suc A) ⊆ (C
·o x) ↔
(C ·o suc A) ⊆ (C
·o suc A))) |
| 3 | 2 | imbi2d 464 |
. . . . . . . . . . 11
⊢ (x =
suc A → ((C ∈ ω → (C ·o suc A) ⊆ (C
·o x)) ↔
(C ∈ ω → (C ·o suc A) ⊆ (C
·o suc A)))) |
| 4 | | opreq2 3007 |
. . . . . . . . . . . . 13
⊢ (x =
y → (C ·o x) = (C
·o y)) |
| 5 | 4 | sseq2d 1528 |
. . . . . . . . . . . 12
⊢ (x =
y → ((C ·o suc A) ⊆ (C
·o x) ↔
(C ·o suc A) ⊆ (C
·o y))) |
| 6 | 5 | imbi2d 464 |
. . . . . . . . . . 11
⊢ (x =
y → ((C ∈ ω → (C ·o suc A) ⊆ (C
·o x)) ↔
(C ∈ ω → (C ·o suc A) ⊆ (C
·o y)))) |
| 7 | | opreq2 3007 |
. . . . . . . . . . . . 13
⊢ (x =
suc y → (C ·o x) = (C
·o suc y)) |
| 8 | 7 | sseq2d 1528 |
. . . . . . . . . . . 12
⊢ (x =
suc y → ((C ·o suc A) ⊆ (C
·o x) ↔
(C ·o suc A) ⊆ (C
·o suc y))) |
| 9 | 8 | imbi2d 464 |
. . . . . . . . . . 11
⊢ (x =
suc y → ((C ∈ ω → (C ·o suc A) ⊆ (C
·o x)) ↔
(C ∈ ω → (C ·o suc A) ⊆ (C
·o suc y)))) |
| 10 | | opreq2 3007 |
. . . . . . . . . . . . 13
⊢ (x =
B → (C ·o x) = (C
·o B)) |
| 11 | 10 | sseq2d 1528 |
. . . . . . . . . . . 12
⊢ (x =
B → ((C ·o suc A) ⊆ (C
·o x) ↔
(C ·o suc A) ⊆ (C
·o B))) |
| 12 | 11 | imbi2d 464 |
. . . . . . . . . . 11
⊢ (x =
B → ((C ∈ ω → (C ·o suc A) ⊆ (C
·o x)) ↔
(C ∈ ω → (C ·o suc A) ⊆ (C
·o B)))) |
| 13 | | ssid 1519 |
. . . . . . . . . . . . 13
⊢ (C
·o suc A) ⊆
(C ·o suc A) |
| 14 | 13 | a1i 7 |
. . . . . . . . . . . 12
⊢ (C
∈ ω → (C
·o suc A) ⊆
(C ·o suc A)) |
| 15 | 14 | a1i 7 |
. . . . . . . . . . 11
⊢ (suc A
∈ ω → (C ∈ ω
→ (C ·o suc
A) ⊆ (C ·o suc A))) |
| 16 | | sstr2 1510 |
. . . . . . . . . . . . . . . . . 18
⊢ ((C
·o suc A) ⊆
(C ·o y) → ((C
·o y) ⊆
((C ·o y) +o C) → (C
·o suc A) ⊆
((C ·o y) +o C))) |
| 17 | | pm3.27 260 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((C
∈ ω ∧ (C
·o y) ∈
ω) → (C
·o y) ∈
ω) |
| 18 | | nnont 2379 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((C
·o y) ∈
ω → (C
·o y) ∈
On) |
| 19 | | oa0 3124 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((C
·o y) ∈ On
→ ((C ·o
y) +o ∅) =
(C ·o y)) |
| 20 | 17, 18, 19 | 3syl 21 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((C
∈ ω ∧ (C
·o y) ∈
ω) → ((C
·o y)
+o ∅) = (C
·o y)) |
| 21 | | peano1 2390 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ∅ ∈ ω |
| 22 | | 0ss 1725 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ∅ ⊆ C |
| 23 | | nnaword 3185 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((∅ ∈ ω ∧ C ∈ ω ∧ (C ·o y) ∈ ω) → (∅ ⊆ C ↔ ((C
·o y)
+o ∅) ⊆ ((C
·o y)
+o C))) |
| 24 | 22, 23 | mpbii 168 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((∅ ∈ ω ∧ C ∈ ω ∧ (C ·o y) ∈ ω) → ((C ·o y) +o ∅) ⊆ ((C ·o y) +o C)) |
| 25 | 21, 24 | mp3an1 639 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((C
∈ ω ∧ (C
·o y) ∈
ω) → ((C
·o y)
+o ∅) ⊆ ((C
·o y)
+o C)) |
| 26 | 20, 25 | eqsstr3d 1535 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((C
∈ ω ∧ (C
·o y) ∈
ω) → (C
·o y) ⊆
((C ·o y) +o C)) |
| 27 | | nnmcl 3173 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((C
∈ ω ∧ y ∈ ω)
→ (C ·o
y) ∈ ω) |
| 28 | 26, 27 | sylan2 346 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((C
∈ ω ∧ (C ∈ ω
∧ y ∈ ω)) → (C ·o y) ⊆ ((C
·o y)
+o C)) |
| 29 | 28 | anabss5 384 |
. . . . . . . . . . . . . . . . . 18
⊢ ((C
∈ ω ∧ y ∈ ω)
→ (C ·o
y) ⊆ ((C ·o y) +o C)) |
| 30 | 16, 29 | syl5 22 |
. . . . . . . . . . . . . . . . 17
⊢ ((C
·o suc A) ⊆
(C ·o y) → ((C
∈ ω ∧ y ∈ ω)
→ (C ·o suc
A) ⊆ ((C ·o y) +o C))) |
| 31 | 30 | com12 13 |
. . . . . . . . . . . . . . . 16
⊢ ((C
∈ ω ∧ y ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o y) → (C
·o suc A) ⊆
((C ·o y) +o C))) |
| 32 | | nnmsuc 3169 |
. . . . . . . . . . . . . . . . 17
⊢ ((C
∈ ω ∧ y ∈ ω)
→ (C ·o suc
y) = ((C ·o y) +o C)) |
| 33 | 32 | sseq2d 1528 |
. . . . . . . . . . . . . . . 16
⊢ ((C
∈ ω ∧ y ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o suc y) ↔ (C
·o suc A) ⊆
((C ·o y) +o C))) |
| 34 | 31, 33 | sylibrd 179 |
. . . . . . . . . . . . . . 15
⊢ ((C
∈ ω ∧ y ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o y) → (C
·o suc A) ⊆
(C ·o suc y))) |
| 35 | 34 | exp 291 |
. . . . . . . . . . . . . 14
⊢ (C
∈ ω → (y ∈ ω
→ ((C ·o suc
A) ⊆ (C ·o y) → (C
·o suc A) ⊆
(C ·o suc y)))) |
| 36 | 35 | com12 13 |
. . . . . . . . . . . . 13
⊢ (y
∈ ω → (C ∈ ω
→ ((C ·o suc
A) ⊆ (C ·o y) → (C
·o suc A) ⊆
(C ·o suc y)))) |
| 37 | 36 | ad2antll 320 |
. . . . . . . . . . . 12
⊢ (((y
∈ ω ∧ suc A ∈ ω)
∧ suc A ⊆ y) → (C
∈ ω → ((C
·o suc A) ⊆
(C ·o y) → (C
·o suc A) ⊆
(C ·o suc y)))) |
| 38 | 37 | a2d 15 |
. . . . . . . . . . 11
⊢ (((y
∈ ω ∧ suc A ∈ ω)
∧ suc A ⊆ y) → ((C
∈ ω → (C
·o suc A) ⊆
(C ·o y)) → (C
∈ ω → (C
·o suc A) ⊆
(C ·o suc y)))) |
| 39 | 3, 6, 9, 12, 15, 38 | findsg 2398 |
. . . . . . . . . 10
⊢ (((B
∈ ω ∧ suc A ∈ ω)
∧ suc A ⊆ B) → (C
∈ ω → (C
·o suc A) ⊆
(C ·o B))) |
| 40 | 39 | exp 291 |
. . . . . . . . 9
⊢ ((B
∈ ω ∧ suc A ∈ ω)
→ (suc A ⊆ B → (C
∈ ω → (C
·o suc A) ⊆
(C ·o B)))) |
| 41 | | peano2b 2388 |
. . . . . . . . 9
⊢ (A
∈ ω ↔ suc A ∈
ω) |
| 42 | 40, 41 | sylan2b 347 |
. . . . . . . 8
⊢ ((B
∈ ω ∧ A ∈ ω)
→ (suc A ⊆ B → (C
∈ ω → (C
·o suc A) ⊆
(C ·o B)))) |
| 43 | | ordsucss 2320 |
. . . . . . . . . 10
⊢ (Ord B
→ (A ∈ B → suc A
⊆ B)) |
| 44 | 43 | imp 277 |
. . . . . . . . 9
⊢ ((Ord B ∧ A ∈
B) → suc A ⊆ B) |
| 45 | | nnord 2381 |
. . . . . . . . 9
⊢ (B
∈ ω → Ord B) |
| 46 | 44, 45 | sylan 343 |
. . . . . . . 8
⊢ ((B
∈ ω ∧ A ∈ B) → suc A
⊆ B) |
| 47 | 42, 46 | syl5 22 |
. . . . . . 7
⊢ ((B
∈ ω ∧ A ∈ ω)
→ ((B ∈ ω ∧ A ∈ B)
→ (C ∈ ω → (C ·o suc A) ⊆ (C
·o B)))) |
| 48 | 47 | exp4b 296 |
. . . . . 6
⊢ (B
∈ ω → (A ∈ ω
→ (B ∈ ω → (A ∈ B
→ (C ∈ ω → (C ·o suc A) ⊆ (C
·o B)))))) |
| 49 | 48 | pm2.43b 61 |
. . . . 5
⊢ (A
∈ ω → (B ∈ ω
→ (A ∈ B → (C
∈ ω → (C
·o suc A) ⊆
(C ·o B))))) |
| 50 | 49 | com34 36 |
. . . 4
⊢ (A
∈ ω → (B ∈ ω
→ (C ∈ ω → (A ∈ B
→ (C ·o suc
A) ⊆ (C ·o B))))) |
| 51 | 50 | 3imp 608 |
. . 3
⊢ ((A
∈ ω ∧ B ∈ ω ∧
C ∈ ω) → (A ∈ B
→ (C ·o suc
A) ⊆ (C ·o B))) |
| 52 | | nnmsuc 3169 |
. . . . . . . 8
⊢ ((C
∈ ω ∧ A ∈ ω)
→ (C ·o suc
A) = ((C ·o A) +o C)) |
| 53 | 52 | sseq1d 1527 |
. . . . . . 7
⊢ ((C
∈ ω ∧ A ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o B) ↔ ((C
·o A)
+o C) ⊆ (C ·o B))) |
| 54 | | ssel 1502 |
. . . . . . 7
⊢ (((C
·o A)
+o C) ⊆ (C ·o B) → ((C
·o A) ∈
((C ·o A) +o C) → (C
·o A) ∈
(C ·o B))) |
| 55 | 53, 54 | syl6bi 187 |
. . . . . 6
⊢ ((C
∈ ω ∧ A ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o B) → ((C
·o A) ∈
((C ·o A) +o C) → (C
·o A) ∈
(C ·o B)))) |
| 56 | | nnaordi 3176 |
. . . . . . . . 9
⊢ ((C
∈ ω ∧ (C
·o A) ∈
ω) → (∅ ∈ C →
((C ·o A) +o ∅) ∈ ((C ·o A) +o C))) |
| 57 | | pm3.27 260 |
. . . . . . . . . . 11
⊢ ((C
∈ ω ∧ (C
·o A) ∈
ω) → (C
·o A) ∈
ω) |
| 58 | | nnont 2379 |
. . . . . . . . . . 11
⊢ ((C
·o A) ∈
ω → (C
·o A) ∈
On) |
| 59 | | oa0 3124 |
. . . . . . . . . . 11
⊢ ((C
·o A) ∈ On
→ ((C ·o
A) +o ∅) =
(C ·o A)) |
| 60 | 57, 58, 59 | 3syl 21 |
. . . . . . . . . 10
⊢ ((C
∈ ω ∧ (C
·o A) ∈
ω) → ((C
·o A)
+o ∅) = (C
·o A)) |
| 61 | 60 | eleq1d 1155 |
. . . . . . . . 9
⊢ ((C
∈ ω ∧ (C
·o A) ∈
ω) → (((C
·o A)
+o ∅) ∈ ((C
·o A)
+o C) ↔ (C ·o A) ∈ ((C
·o A)
+o C))) |
| 62 | 56, 61 | sylibd 177 |
. . . . . . . 8
⊢ ((C
∈ ω ∧ (C
·o A) ∈
ω) → (∅ ∈ C →
(C ·o A) ∈ ((C
·o A)
+o C))) |
| 63 | | nnmcl 3173 |
. . . . . . . 8
⊢ ((C
∈ ω ∧ A ∈ ω)
→ (C ·o
A) ∈ ω) |
| 64 | 62, 63 | sylan2 346 |
. . . . . . 7
⊢ ((C
∈ ω ∧ (C ∈ ω
∧ A ∈ ω)) → (∅
∈ C → (C ·o A) ∈ ((C
·o A)
+o C))) |
| 65 | 64 | anabss5 384 |
. . . . . 6
⊢ ((C
∈ ω ∧ A ∈ ω)
→ (∅ ∈ C → (C ·o A) ∈ ((C
·o A)
+o C))) |
| 66 | 55, 65 | syl5d 53 |
. . . . 5
⊢ ((C
∈ ω ∧ A ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o B) → (∅ ∈ C → (C
·o A) ∈
(C ·o B)))) |
| 67 | 66 | ancoms 334 |
. . . 4
⊢ ((A
∈ ω ∧ C ∈ ω)
→ ((C ·o suc
A) ⊆ (C ·o B) → (∅ ∈ C → (C
·o A) ∈
(C ·o B)))) |
| 68 | 67 | 3adant2 598 |
. . 3
⊢ ((A
∈ ω ∧ B ∈ ω ∧
C ∈ ω) → ((C ·o suc A) ⊆ (C
·o B) →
(∅ ∈ C → (C ·o A) ∈ (C
·o B)))) |
| 69 | 51, 68 | syld 27 |
. 2
⊢ ((A
∈ ω ∧ B ∈ ω ∧
C ∈ ω) → (A ∈ B
→ (∅ ∈ C → (C ·o A) ∈ (C
·o B)))) |
| 70 | 69 | imp3a 279 |
1
⊢ ((A
∈ ω ∧ B ∈ ω ∧
C ∈ ω) → ((A ∈ B ∧
∅ ∈ C) → (C ·o A) ∈ (C
·o B))) |