Proof of Theorem nnleltp1t
| Step | Hyp | Ref
| Expression |
| 1 | | leloet 4284 |
. . 3
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ (A ≤ B ↔ (A <
B ∨ A = B))) |
| 2 | | nnret 4427 |
. . 3
⊢ (A
∈ ℕ → A ∈
ℝ) |
| 3 | | nnret 4427 |
. . 3
⊢ (B
∈ ℕ → B ∈
ℝ) |
| 4 | 1, 2, 3 | syl2an 349 |
. 2
⊢ ((A
∈ ℕ ∧ B ∈ ℕ)
→ (A ≤ B ↔ (A <
B ∨ A = B))) |
| 5 | | lt01 4377 |
. . . . . . 7
⊢ 0 < 1 |
| 6 | | ax0re 4063 |
. . . . . . . . 9
⊢ 0 ∈ ℝ |
| 7 | | ax1re 4064 |
. . . . . . . . 9
⊢ 1 ∈ ℝ |
| 8 | 6, 7 | pm3.2i 234 |
. . . . . . . 8
⊢ (0 ∈ ℝ ∧ 1 ∈
ℝ) |
| 9 | | lt2addt 4361 |
. . . . . . . . 9
⊢ (((A
∈ ℝ ∧ 0 ∈ ℝ) ∧ (B ∈ ℝ ∧ 1 ∈ ℝ)) →
((A < B ∧ 0 < 1) → (A + 0) < (B +
1))) |
| 10 | 9 | an4s 390 |
. . . . . . . 8
⊢ (((A
∈ ℝ ∧ B ∈ ℝ)
∧ (0 ∈ ℝ ∧ 1 ∈ ℝ)) → ((A < B ∧ 0
< 1) → (A + 0) < (B + 1))) |
| 11 | 8, 10 | mpan2 519 |
. . . . . . 7
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ ((A < B ∧ 0 < 1) → (A + 0) < (B +
1))) |
| 12 | 5, 11 | mpan2i 522 |
. . . . . 6
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ (A < B → (A + 0)
< (B + 1))) |
| 13 | | pm3.26 256 |
. . . . . . . 8
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ A ∈ ℝ) |
| 14 | | recnt 4097 |
. . . . . . . 8
⊢ (A
∈ ℝ → A ∈
ℂ) |
| 15 | | ax0id 4076 |
. . . . . . . 8
⊢ (A
∈ ℂ → (A + 0) = A) |
| 16 | 13, 14, 15 | 3syl 21 |
. . . . . . 7
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ (A + 0) = A) |
| 17 | 16 | breq1d 2071 |
. . . . . 6
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ ((A + 0) < (B + 1) ↔ A
< (B + 1))) |
| 18 | 12, 17 | sylibd 177 |
. . . . 5
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ (A < B → A <
(B + 1))) |
| 19 | | breq1 2065 |
. . . . . . . 8
⊢ (A =
B → (A < (B + 1)
↔ B < (B + 1))) |
| 20 | | ltplus1t 4383 |
. . . . . . . 8
⊢ (B
∈ ℝ → B < (B + 1)) |
| 21 | 19, 20 | syl5bir 184 |
. . . . . . 7
⊢ (A =
B → (B ∈ ℝ → A < (B +
1))) |
| 22 | 21 | com12 13 |
. . . . . 6
⊢ (B
∈ ℝ → (A = B → A <
(B + 1))) |
| 23 | 22 | adantl 305 |
. . . . 5
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ (A = B → A <
(B + 1))) |
| 24 | 18, 23 | jaod 329 |
. . . 4
⊢ ((A
∈ ℝ ∧ B ∈ ℝ)
→ ((A < B ∨ A =
B) → A < (B +
1))) |
| 25 | 24, 2, 3 | syl2an 349 |
. . 3
⊢ ((A
∈ ℕ ∧ B ∈ ℕ)
→ ((A < B ∨ A =
B) → A < (B +
1))) |
| 26 | | opreq1 3006 |
. . . . . . . . . 10
⊢ (x = 1
→ (x + 1) = (1 + 1)) |
| 27 | 26 | breq2d 2072 |
. . . . . . . . 9
⊢ (x = 1
→ (z < (x + 1) ↔ z
< (1 + 1))) |
| 28 | | breq2 2066 |
. . . . . . . . . 10
⊢ (x = 1
→ (z < x ↔ z <
1)) |
| 29 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (x = 1
→ (z = x ↔ z =
1)) |
| 30 | 28, 29 | orbi12d 475 |
. . . . . . . . 9
⊢ (x = 1
→ ((z < x ∨ z =
x) ↔ (z < 1 ∨ z
= 1))) |
| 31 | 27, 30 | imbi12d 474 |
. . . . . . . 8
⊢ (x = 1
→ ((z < (x + 1) → (z
< x ∨ z = x)) ↔
(z < (1 + 1) → (z < 1 ∨ z
= 1)))) |
| 32 | 31 | biraldv 1219 |
. . . . . . 7
⊢ (x = 1
→ (∀z ∈ ℕ (z < (x + 1)
→ (z < x ∨ z =
x)) ↔ ∀z ∈ ℕ (z < (1 + 1) → (z < 1 ∨ z
= 1)))) |
| 33 | | opreq1 3006 |
. . . . . . . . . 10
⊢ (x =
y → (x + 1) = (y +
1)) |
| 34 | 33 | breq2d 2072 |
. . . . . . . . 9
⊢ (x =
y → (z < (x + 1)
↔ z < (y + 1))) |
| 35 | | breq2 2066 |
. . . . . . . . . 10
⊢ (x =
y → (z < x ↔
z < y)) |
| 36 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (x =
y → (z = x ↔
z = y)) |
| 37 | 35, 36 | orbi12d 475 |
. . . . . . . . 9
⊢ (x =
y → ((z < x ∨
z = x)
↔ (z < y ∨ z =
y))) |
| 38 | 34, 37 | imbi12d 474 |
. . . . . . . 8
⊢ (x =
y → ((z < (x + 1)
→ (z < x ∨ z =
x)) ↔ (z < (y + 1)
→ (z < y ∨ z =
y)))) |
| 39 | 38 | biraldv 1219 |
. . . . . . 7
⊢ (x =
y → (∀z ∈ ℕ (z < (x + 1)
→ (z < x ∨ z =
x)) ↔ ∀z ∈ ℕ (z < (y + 1)
→ (z < y ∨ z =
y)))) |
| 40 | | opreq1 3006 |
. . . . . . . . . 10
⊢ (x =
(y + 1) → (x + 1) = ((y +
1) + 1)) |
| 41 | 40 | breq2d 2072 |
. . . . . . . . 9
⊢ (x =
(y + 1) → (z < (x + 1)
↔ z < ((y + 1) + 1))) |
| 42 | | breq2 2066 |
. . . . . . . . . 10
⊢ (x =
(y + 1) → (z < x ↔
z < (y + 1))) |
| 43 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (x =
(y + 1) → (z = x ↔
z = (y
+ 1))) |
| 44 | 42, 43 | orbi12d 475 |
. . . . . . . . 9
⊢ (x =
(y + 1) → ((z < x ∨
z = x)
↔ (z < (y + 1) ∨ z =
(y + 1)))) |
| 45 | 41, 44 | imbi12d 474 |
. . . . . . . 8
⊢ (x =
(y + 1) → ((z < (x + 1)
→ (z < x ∨ z =
x)) ↔ (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 46 | 45 | biraldv 1219 |
. . . . . . 7
⊢ (x =
(y + 1) → (∀z ∈ ℕ (z < (x + 1)
→ (z < x ∨ z =
x)) ↔ ∀z ∈ ℕ (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 47 | | opreq1 3006 |
. . . . . . . . . 10
⊢ (x =
B → (x + 1) = (B +
1)) |
| 48 | 47 | breq2d 2072 |
. . . . . . . . 9
⊢ (x =
B → (z < (x + 1)
↔ z < (B + 1))) |
| 49 | | breq2 2066 |
. . . . . . . . . 10
⊢ (x =
B → (z < x ↔
z < B)) |
| 50 | | cleq2 1110 |
. . . . . . . . . 10
⊢ (x =
B → (z = x ↔
z = B)) |
| 51 | 49, 50 | orbi12d 475 |
. . . . . . . . 9
⊢ (x =
B → ((z < x ∨
z = x)
↔ (z < B ∨ z =
B))) |
| 52 | 48, 51 | imbi12d 474 |
. . . . . . . 8
⊢ (x =
B → ((z < (x + 1)
→ (z < x ∨ z =
x)) ↔ (z < (B + 1)
→ (z < B ∨ z =
B)))) |
| 53 | 52 | biraldv 1219 |
. . . . . . 7
⊢ (x =
B → (∀z ∈ ℕ (z < (x + 1)
→ (z < x ∨ z =
x)) ↔ ∀z ∈ ℕ (z < (B + 1)
→ (z < B ∨ z =
B)))) |
| 54 | | breq1 2065 |
. . . . . . . . . 10
⊢ (x = 1
→ (x < (1 + 1) ↔ 1 < (1 +
1))) |
| 55 | | breq1 2065 |
. . . . . . . . . . 11
⊢ (x = 1
→ (x < 1 ↔ 1 <
1)) |
| 56 | | cleq1 1107 |
. . . . . . . . . . 11
⊢ (x = 1
→ (x = 1 ↔ 1 = 1)) |
| 57 | 55, 56 | orbi12d 475 |
. . . . . . . . . 10
⊢ (x = 1
→ ((x < 1 ∨ x = 1) ↔ (1 < 1 ∨ 1 = 1))) |
| 58 | 54, 57 | imbi12d 474 |
. . . . . . . . 9
⊢ (x = 1
→ ((x < (1 + 1) → (x < 1 ∨ x
= 1)) ↔ (1 < (1 + 1) → (1 < 1 ∨ 1 = 1)))) |
| 59 | | breq1 2065 |
. . . . . . . . . 10
⊢ (x =
y → (x < (1 + 1) ↔ y < (1 + 1))) |
| 60 | | breq1 2065 |
. . . . . . . . . . 11
⊢ (x =
y → (x < 1 ↔ y < 1)) |
| 61 | | cleq1 1107 |
. . . . . . . . . . 11
⊢ (x =
y → (x = 1 ↔ y =
1)) |
| 62 | 60, 61 | orbi12d 475 |
. . . . . . . . . 10
⊢ (x =
y → ((x < 1 ∨ x
= 1) ↔ (y < 1 ∨ y = 1))) |
| 63 | 59, 62 | imbi12d 474 |
. . . . . . . . 9
⊢ (x =
y → ((x < (1 + 1) → (x < 1 ∨ x
= 1)) ↔ (y < (1 + 1) →
(y < 1 ∨ y = 1)))) |
| 64 | | breq1 2065 |
. . . . . . . . . 10
⊢ (x =
(y + 1) → (x < (1 + 1) ↔ (y + 1) < (1 + 1))) |
| 65 | | breq1 2065 |
. . . . . . . . . . 11
⊢ (x =
(y + 1) → (x < 1 ↔ (y + 1) < 1)) |
| 66 | | cleq1 1107 |
. . . . . . . . . . 11
⊢ (x =
(y + 1) → (x = 1 ↔ (y
+ 1) = 1)) |
| 67 | 65, 66 | orbi12d 475 |
. . . . . . . . . 10
⊢ (x =
(y + 1) → ((x < 1 ∨ x
= 1) ↔ ((y + 1) < 1 ∨ (y + 1) = 1))) |
| 68 | 64, 67 | imbi12d 474 |
. . . . . . . . 9
⊢ (x =
(y + 1) → ((x < (1 + 1) → (x < 1 ∨ x
= 1)) ↔ ((y + 1) < (1 + 1) →
((y + 1) < 1 ∨ (y + 1) = 1)))) |
| 69 | | breq1 2065 |
. . . . . . . . . 10
⊢ (x =
z → (x < (1 + 1) ↔ z < (1 + 1))) |
| 70 | | breq1 2065 |
. . . . . . . . . . 11
⊢ (x =
z → (x < 1 ↔ z < 1)) |
| 71 | | cleq1 1107 |
. . . . . . . . . . 11
⊢ (x =
z → (x = 1 ↔ z =
1)) |
| 72 | 70, 71 | orbi12d 475 |
. . . . . . . . . 10
⊢ (x =
z → ((x < 1 ∨ x
= 1) ↔ (z < 1 ∨ z = 1))) |
| 73 | 69, 72 | imbi12d 474 |
. . . . . . . . 9
⊢ (x =
z → ((x < (1 + 1) → (x < 1 ∨ x
= 1)) ↔ (z < (1 + 1) →
(z < 1 ∨ z = 1)))) |
| 74 | | cleqid 1102 |
. . . . . . . . . . . 12
⊢ 1 = 1 |
| 75 | 74 | a1i 7 |
. . . . . . . . . . 11
⊢ (¬ 1 < 1 → 1 = 1) |
| 76 | 75 | orri 201 |
. . . . . . . . . 10
⊢ (1 < 1 ∨ 1 = 1) |
| 77 | 76 | a1i 7 |
. . . . . . . . 9
⊢ (1 < (1 + 1) → (1 < 1 ∨ 1 =
1)) |
| 78 | | ltadd1t 4348 |
. . . . . . . . . . . 12
⊢ ((y
∈ ℝ ∧ 1 ∈ ℝ ∧ 1 ∈ ℝ) → (y < 1 ↔ (y + 1) < (1 + 1))) |
| 79 | | nnret 4427 |
. . . . . . . . . . . 12
⊢ (y
∈ ℕ → y ∈
ℝ) |
| 80 | 7 | a1i 7 |
. . . . . . . . . . . 12
⊢ (y
∈ ℕ → 1 ∈ ℝ) |
| 81 | 78, 79, 80, 80 | syl3anc 629 |
. . . . . . . . . . 11
⊢ (y
∈ ℕ → (y < 1 ↔
(y + 1) < (1 + 1))) |
| 82 | | nnge1t 4439 |
. . . . . . . . . . . . 13
⊢ (y
∈ ℕ → 1 ≤ y) |
| 83 | | leltt 4278 |
. . . . . . . . . . . . . 14
⊢ ((1 ∈ ℝ ∧ y ∈ ℝ) → (1 ≤ y ↔ ¬ y
< 1)) |
| 84 | 83, 80, 79 | sylanc 361 |
. . . . . . . . . . . . 13
⊢ (y
∈ ℕ → (1 ≤ y ↔
¬ y < 1)) |
| 85 | 82, 84 | mpbid 170 |
. . . . . . . . . . . 12
⊢ (y
∈ ℕ → ¬ y <
1) |
| 86 | 85 | pm2.21d 74 |
. . . . . . . . . . 11
⊢ (y
∈ ℕ → (y < 1 →
((y + 1) < 1 ∨ (y + 1) = 1))) |
| 87 | 81, 86 | sylbird 180 |
. . . . . . . . . 10
⊢ (y
∈ ℕ → ((y + 1) < (1 + 1)
→ ((y + 1) < 1 ∨ (y + 1) = 1))) |
| 88 | 87 | a1d 14 |
. . . . . . . . 9
⊢ (y
∈ ℕ → ((y < (1 + 1)
→ (y < 1 ∨ y = 1)) → ((y + 1) < (1 + 1) → ((y + 1) < 1 ∨ (y + 1) = 1)))) |
| 89 | 58, 63, 68, 73, 77, 88 | nnind 4434 |
. . . . . . . 8
⊢ (z
∈ ℕ → (z < (1 + 1)
→ (z < 1 ∨ z = 1))) |
| 90 | 89 | rgen 1247 |
. . . . . . 7
⊢ ∀z ∈ ℕ (z < (1 + 1) → (z < 1 ∨ z
= 1)) |
| 91 | | breq1 2065 |
. . . . . . . . . . . . . 14
⊢ (x = 1
→ (x < ((y + 1) + 1) ↔ 1 < ((y + 1) + 1))) |
| 92 | | breq1 2065 |
. . . . . . . . . . . . . . 15
⊢ (x = 1
→ (x < (y + 1) ↔ 1 < (y + 1))) |
| 93 | | cleq1 1107 |
. . . . . . . . . . . . . . 15
⊢ (x = 1
→ (x = (y + 1) ↔ 1 = (y + 1))) |
| 94 | 92, 93 | orbi12d 475 |
. . . . . . . . . . . . . 14
⊢ (x = 1
→ ((x < (y + 1) ∨ x =
(y + 1)) ↔ (1 < (y + 1) ∨ 1 = (y + 1)))) |
| 95 | 91, 94 | imbi12d 474 |
. . . . . . . . . . . . 13
⊢ (x = 1
→ ((x < ((y + 1) + 1) → (x < (y + 1)
∨ x = (y + 1))) ↔ (1 < ((y + 1) + 1) → (1 < (y + 1) ∨ 1 = (y + 1))))) |
| 96 | 95 | imbi2d 464 |
. . . . . . . . . . . 12
⊢ (x = 1
→ (((y ∈ ℕ ∧
∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1)))) ↔ ((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (1 < ((y + 1) + 1) → (1 < (y + 1) ∨ 1 = (y + 1)))))) |
| 97 | | breq1 2065 |
. . . . . . . . . . . . . 14
⊢ (x =
v → (x < ((y + 1)
+ 1) ↔ v < ((y + 1) + 1))) |
| 98 | | breq1 2065 |
. . . . . . . . . . . . . . 15
⊢ (x =
v → (x < (y + 1)
↔ v < (y + 1))) |
| 99 | | cleq1 1107 |
. . . . . . . . . . . . . . 15
⊢ (x =
v → (x = (y + 1)
↔ v = (y + 1))) |
| 100 | 98, 99 | orbi12d 475 |
. . . . . . . . . . . . . 14
⊢ (x =
v → ((x < (y + 1)
∨ x = (y + 1)) ↔ (v < (y + 1)
∨ v = (y + 1)))) |
| 101 | 97, 100 | imbi12d 474 |
. . . . . . . . . . . . 13
⊢ (x =
v → ((x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1))) ↔ (v < ((y + 1)
+ 1) → (v < (y + 1) ∨ v =
(y + 1))))) |
| 102 | 101 | imbi2d 464 |
. . . . . . . . . . . 12
⊢ (x =
v → (((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1)))) ↔ ((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (v < ((y + 1)
+ 1) → (v < (y + 1) ∨ v =
(y + 1)))))) |
| 103 | | breq1 2065 |
. . . . . . . . . . . . . 14
⊢ (x =
(v + 1) → (x < ((y + 1)
+ 1) ↔ (v + 1) < ((y + 1) + 1))) |
| 104 | | breq1 2065 |
. . . . . . . . . . . . . . 15
⊢ (x =
(v + 1) → (x < (y + 1)
↔ (v + 1) < (y + 1))) |
| 105 | | cleq1 1107 |
. . . . . . . . . . . . . . 15
⊢ (x =
(v + 1) → (x = (y + 1)
↔ (v + 1) = (y + 1))) |
| 106 | 104, 105 | orbi12d 475 |
. . . . . . . . . . . . . 14
⊢ (x =
(v + 1) → ((x < (y + 1)
∨ x = (y + 1)) ↔ ((v + 1) < (y +
1) ∨ (v + 1) = (y + 1)))) |
| 107 | 103, 106 | imbi12d 474 |
. . . . . . . . . . . . 13
⊢ (x =
(v + 1) → ((x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1))) ↔ ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1))))) |
| 108 | 107 | imbi2d 464 |
. . . . . . . . . . . 12
⊢ (x =
(v + 1) → (((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1)))) ↔ ((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1)))))) |
| 109 | | breq1 2065 |
. . . . . . . . . . . . . 14
⊢ (x =
z → (x < ((y + 1)
+ 1) ↔ z < ((y + 1) + 1))) |
| 110 | | breq1 2065 |
. . . . . . . . . . . . . . 15
⊢ (x =
z → (x < (y + 1)
↔ z < (y + 1))) |
| 111 | | cleq1 1107 |
. . . . . . . . . . . . . . 15
⊢ (x =
z → (x = (y + 1)
↔ z = (y + 1))) |
| 112 | 110, 111 | orbi12d 475 |
. . . . . . . . . . . . . 14
⊢ (x =
z → ((x < (y + 1)
∨ x = (y + 1)) ↔ (z < (y + 1)
∨ z = (y + 1)))) |
| 113 | 109, 112 | imbi12d 474 |
. . . . . . . . . . . . 13
⊢ (x =
z → ((x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1))) ↔ (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 114 | 113 | imbi2d 464 |
. . . . . . . . . . . 12
⊢ (x =
z → (((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (x < ((y + 1)
+ 1) → (x < (y + 1) ∨ x =
(y + 1)))) ↔ ((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1)))))) |
| 115 | | nngt0t 4441 |
. . . . . . . . . . . . . . . . . . 19
⊢ (y
∈ ℕ → 0 < y) |
| 116 | | ltadd1t 4348 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((0 ∈ ℝ ∧ y ∈ ℝ ∧ 1 ∈ ℝ) → (0
< y ↔ (0 + 1) < (y + 1))) |
| 117 | 6 | a1i 7 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (y
∈ ℕ → 0 ∈ ℝ) |
| 118 | 116, 117, 79, 80 | syl3anc 629 |
. . . . . . . . . . . . . . . . . . 19
⊢ (y
∈ ℕ → (0 < y ↔ (0 +
1) < (y + 1))) |
| 119 | 115, 118 | mpbid 170 |
. . . . . . . . . . . . . . . . . 18
⊢ (y
∈ ℕ → (0 + 1) < (y +
1)) |
| 120 | | 1cn 4101 |
. . . . . . . . . . . . . . . . . . . 20
⊢ 1 ∈ ℂ |
| 121 | 120 | addid2 4113 |
. . . . . . . . . . . . . . . . . . 19
⊢ (0 + 1) = 1 |
| 122 | 121 | breq1i 2068 |
. . . . . . . . . . . . . . . . . 18
⊢ ((0 + 1) < (y + 1) ↔ 1 < (y + 1)) |
| 123 | 119, 122 | sylib 173 |
. . . . . . . . . . . . . . . . 17
⊢ (y
∈ ℕ → 1 < (y +
1)) |
| 124 | 123 | a1d 14 |
. . . . . . . . . . . . . . . 16
⊢ (y
∈ ℕ → (¬ 1 = (y + 1)
→ 1 < (y + 1))) |
| 125 | 124 | con1d 85 |
. . . . . . . . . . . . . . 15
⊢ (y
∈ ℕ → (¬ 1 < (y + 1)
→ 1 = (y + 1))) |
| 126 | 125 | orrd 203 |
. . . . . . . . . . . . . 14
⊢ (y
∈ ℕ → (1 < (y + 1) ∨
1 = (y + 1))) |
| 127 | 126 | a1d 14 |
. . . . . . . . . . . . 13
⊢ (y
∈ ℕ → (1 < ((y + 1) + 1)
→ (1 < (y + 1) ∨ 1 = (y + 1)))) |
| 128 | 127 | adantr 306 |
. . . . . . . . . . . 12
⊢ ((y
∈ ℕ ∧ ∀w ∈
ℕ (w < (y + 1) → (w
< y ∨ w = y))) →
(1 < ((y + 1) + 1) → (1 <
(y + 1) ∨ 1 = (y + 1)))) |
| 129 | | breq1 2065 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (w =
v → (w < (y + 1)
↔ v < (y + 1))) |
| 130 | | breq1 2065 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (w =
v → (w < y ↔
v < y)) |
| 131 | | cleq1 1107 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (w =
v → (w = y ↔
v = y)) |
| 132 | 130, 131 | orbi12d 475 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (w =
v → ((w < y ∨
w = y)
↔ (v < y ∨ v =
y))) |
| 133 | 129, 132 | imbi12d 474 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (w =
v → ((w < (y + 1)
→ (w < y ∨ w =
y)) ↔ (v < (y + 1)
→ (v < y ∨ v =
y)))) |
| 134 | 133 | rcla4v 1402 |
. . . . . . . . . . . . . . . . . . 19
⊢ (∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y)) → (v ∈ ℕ → (v < (y + 1)
→ (v < y ∨ v =
y)))) |
| 135 | 134 | com12 13 |
. . . . . . . . . . . . . . . . . 18
⊢ (v
∈ ℕ → (∀w ∈
ℕ (w < (y + 1) → (w
< y ∨ w = y)) →
(v < (y + 1) → (v
< y ∨ v = y)))) |
| 136 | 135 | imp 277 |
. . . . . . . . . . . . . . . . 17
⊢ ((v
∈ ℕ ∧ ∀w ∈
ℕ (w < (y + 1) → (w
< y ∨ w = y))) →
(v < (y + 1) → (v
< y ∨ v = y))) |
| 137 | 136 | adantlr 310 |
. . . . . . . . . . . . . . . 16
⊢ (((v
∈ ℕ ∧ y ∈ ℕ)
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (v < (y + 1)
→ (v < y ∨ v =
y))) |
| 138 | | ltadd1t 4348 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℝ ∧ (y + 1) ∈ ℝ
∧ 1 ∈ ℝ) → (v <
(y + 1) ↔ (v + 1) < ((y
+ 1) + 1))) |
| 139 | | nnret 4427 |
. . . . . . . . . . . . . . . . . . 19
⊢ (v
∈ ℕ → v ∈
ℝ) |
| 140 | 139 | adantr 306 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ v ∈ ℝ) |
| 141 | 79, 7 | jctir 241 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (y
∈ ℕ → (y ∈ ℝ
∧ 1 ∈ ℝ)) |
| 142 | | axaddrcl 4067 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((y
∈ ℝ ∧ 1 ∈ ℝ) → (y + 1) ∈ ℝ) |
| 143 | 141, 142 | syl 12 |
. . . . . . . . . . . . . . . . . . 19
⊢ (y
∈ ℕ → (y + 1) ∈
ℝ) |
| 144 | 143 | adantl 305 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ (y + 1) ∈ ℝ) |
| 145 | 7 | a1i 7 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ 1 ∈ ℝ) |
| 146 | 138, 140, 144, 145 | syl3anc 629 |
. . . . . . . . . . . . . . . . 17
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ (v < (y + 1) ↔ (v
+ 1) < ((y + 1) + 1))) |
| 147 | 146 | adantr 306 |
. . . . . . . . . . . . . . . 16
⊢ (((v
∈ ℕ ∧ y ∈ ℕ)
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (v < (y + 1)
↔ (v + 1) < ((y + 1) + 1))) |
| 148 | | ltadd1t 4348 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((v
∈ ℝ ∧ y ∈ ℝ ∧
1 ∈ ℝ) → (v < y ↔ (v + 1)
< (y + 1))) |
| 149 | | recnt 4097 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (v
∈ ℝ → v ∈
ℂ) |
| 150 | | recnt 4097 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (y
∈ ℝ → y ∈
ℂ) |
| 151 | | recnt 4097 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (1 ∈ ℝ → 1 ∈
ℂ) |
| 152 | 149, 150, 151 | im3an 605 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((v
∈ ℝ ∧ y ∈ ℝ ∧
1 ∈ ℝ) → (v ∈ ℂ
∧ y ∈ ℂ ∧ 1 ∈
ℂ)) |
| 153 | | 3anrot 586 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) ↔ (v ∈ ℂ ∧ y ∈ ℂ ∧ 1 ∈ ℂ)) |
| 154 | 152, 153 | sylibr 175 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((v
∈ ℝ ∧ y ∈ ℝ ∧
1 ∈ ℝ) → (1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ)) |
| 155 | | 3simpc 593 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → (v ∈ ℂ ∧ y ∈ ℂ)) |
| 156 | | 3simp1 594 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → 1 ∈ ℂ) |
| 157 | 155, 156 | jca 236 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → ((v ∈ ℂ ∧ y ∈ ℂ) ∧ 1 ∈ ℂ)) |
| 158 | | anandir 393 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((v
∈ ℂ ∧ y ∈ ℂ)
∧ 1 ∈ ℂ) ↔ ((v ∈
ℂ ∧ 1 ∈ ℂ) ∧ (y
∈ ℂ ∧ 1 ∈ ℂ))) |
| 159 | 157, 158 | sylib 173 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → ((v ∈ ℂ ∧ 1 ∈ ℂ) ∧
(y ∈ ℂ ∧ 1 ∈
ℂ))) |
| 160 | | axaddcom 4070 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((v
∈ ℂ ∧ 1 ∈ ℂ) → (v + 1) = (1 + v)) |
| 161 | | axaddcom 4070 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((y
∈ ℂ ∧ 1 ∈ ℂ) → (y + 1) = (1 + y)) |
| 162 | 160, 161 | cleqan12d 1116 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (((v
∈ ℂ ∧ 1 ∈ ℂ) ∧ (y ∈ ℂ ∧ 1 ∈ ℂ)) →
((v + 1) = (y + 1) ↔ (1 + v) = (1 + y))) |
| 163 | 159, 162 | syl 12 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → ((v + 1) = (y + 1)
↔ (1 + v) = (1 + y))) |
| 164 | | addcant 4122 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → ((1 + v) = (1 + y)
↔ v = y)) |
| 165 | 163, 164 | bitr2d 407 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((1 ∈ ℂ ∧ v ∈ ℂ ∧ y ∈ ℂ) → (v = y ↔
(v + 1) = (y + 1))) |
| 166 | 154, 165 | syl 12 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((v
∈ ℝ ∧ y ∈ ℝ ∧
1 ∈ ℝ) → (v = y ↔ (v + 1)
= (y + 1))) |
| 167 | 148, 166 | orbi12d 475 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℝ ∧ y ∈ ℝ ∧
1 ∈ ℝ) → ((v < y ∨ v =
y) ↔ ((v + 1) < (y +
1) ∨ (v + 1) = (y + 1)))) |
| 168 | 79 | adantl 305 |
. . . . . . . . . . . . . . . . . 18
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ y ∈ ℝ) |
| 169 | 167, 140, 168, 145 | syl3anc 629 |
. . . . . . . . . . . . . . . . 17
⊢ ((v
∈ ℕ ∧ y ∈ ℕ)
→ ((v < y ∨ v =
y) ↔ ((v + 1) < (y +
1) ∨ (v + 1) = (y + 1)))) |
| 170 | 169 | adantr 306 |
. . . . . . . . . . . . . . . 16
⊢ (((v
∈ ℕ ∧ y ∈ ℕ)
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → ((v < y ∨
v = y)
↔ ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1)))) |
| 171 | 137, 147, 170 | 3imtr3d 420 |
. . . . . . . . . . . . . . 15
⊢ (((v
∈ ℕ ∧ y ∈ ℕ)
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1)))) |
| 172 | 171 | exp31 293 |
. . . . . . . . . . . . . 14
⊢ (v
∈ ℕ → (y ∈ ℕ
→ (∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y)) → ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1)))))) |
| 173 | 172 | imp3a 279 |
. . . . . . . . . . . . 13
⊢ (v
∈ ℕ → ((y ∈ ℕ
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1))))) |
| 174 | 173 | a1d 14 |
. . . . . . . . . . . 12
⊢ (v
∈ ℕ → (((y ∈ ℕ
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (v < ((y + 1)
+ 1) → (v < (y + 1) ∨ v =
(y + 1)))) → ((y ∈ ℕ ∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → ((v + 1) < ((y
+ 1) + 1) → ((v + 1) < (y + 1) ∨ (v +
1) = (y + 1)))))) |
| 175 | 96, 102, 108, 114, 128, 174 | nnind 4434 |
. . . . . . . . . . 11
⊢ (z
∈ ℕ → ((y ∈ ℕ
∧ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) → (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 176 | 175 | exp3a 292 |
. . . . . . . . . 10
⊢ (z
∈ ℕ → (y ∈ ℕ
→ (∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y)) → (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1)))))) |
| 177 | 176 | com3l 34 |
. . . . . . . . 9
⊢ (y
∈ ℕ → (∀w ∈
ℕ (w < (y + 1) → (w
< y ∨ w = y)) →
(z ∈ ℕ → (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1)))))) |
| 178 | 177 | r19.21adv 1262 |
. . . . . . . 8
⊢ (y
∈ ℕ → (∀w ∈
ℕ (w < (y + 1) → (w
< y ∨ w = y)) →
∀z ∈ ℕ (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 179 | | breq1 2065 |
. . . . . . . . . 10
⊢ (z =
w → (z < (y + 1)
↔ w < (y + 1))) |
| 180 | | breq1 2065 |
. . . . . . . . . . 11
⊢ (z =
w → (z < y ↔
w < y)) |
| 181 | | cleq1 1107 |
. . . . . . . . . . 11
⊢ (z =
w → (z = y ↔
w = y)) |
| 182 | 180, 181 | orbi12d 475 |
. . . . . . . . . 10
⊢ (z =
w → ((z < y ∨
z = y)
↔ (w < y ∨ w =
y))) |
| 183 | 179, 182 | imbi12d 474 |
. . . . . . . . 9
⊢ (z =
w → ((z < (y + 1)
→ (z < y ∨ z =
y)) ↔ (w < (y + 1)
→ (w < y ∨ w =
y)))) |
| 184 | 183 | cbvralv 1333 |
. . . . . . . 8
⊢ (∀z ∈ ℕ (z < (y + 1)
→ (z < y ∨ z =
y)) ↔ ∀w ∈ ℕ (w < (y + 1)
→ (w < y ∨ w =
y))) |
| 185 | 178, 184 | syl5ib 181 |
. . . . . . 7
⊢ (y
∈ ℕ → (∀z ∈
ℕ (z < (y + 1) → (z
< y ∨ z = y)) →
∀z ∈ ℕ (z < ((y + 1)
+ 1) → (z < (y + 1) ∨ z =
(y + 1))))) |
| 186 | 32, 39, 46, 53, 90, 185 | nnind 4434 |
. . . . . 6
⊢ (B
∈ ℕ → ∀z ∈
ℕ (z < (B + 1) → (z
< B ∨ z = B))) |
| 187 | | breq1 2065 |
. . . . . . . 8
⊢ (z =
A → (z < (B + 1)
↔ A < (B + 1))) |
| 188 | | breq1 2065 |
. . . . . . . . 9
⊢ (z =
A → (z < B ↔
A < B)) |
| 189 | | cleq1 1107 |
. . . . . . . . 9
⊢ (z =
A → (z = B ↔
A = B)) |
| 190 | 188, 189 | orbi12d 475 |
. . . . . . . 8
⊢ (z =
A → ((z < B ∨
z = B)
↔ (A < B ∨ A =
B))) |
| 191 | 187, 190 | imbi12d 474 |
. . . . . . 7
⊢ (z =
A → ((z < (B + 1)
→ (z < B ∨ z =
B)) ↔ (A < (B + 1)
→ (A < B ∨ A =
B)))) |
| 192 | 191 | rcla4v 1402 |
. . . . . 6
⊢ (∀z ∈ ℕ (z < (B + 1)
→ (z < B ∨ z =
B)) → (A ∈ ℕ → (A < (B + 1)
→ (A < B ∨ A =
B)))) |
| 193 | 186, 192 | syl 12 |
. . . . 5
⊢ (B
∈ ℕ → (A ∈ ℕ
→ (A < (B + 1) → (A
< B ∨ A = B)))) |
| 194 | 193 | com12 13 |
. . . 4
⊢ (A
∈ ℕ → (B ∈ ℕ
→ (A < (B + 1) → (A
< B ∨ A = B)))) |
| 195 | 194 | imp 277 |
. . 3
⊢ ((A
∈ ℕ ∧ B ∈ ℕ)
→ (A < (B + 1) → (A
< B ∨ A = B))) |
| 196 | 25, 195 | impbid 397 |
. 2
⊢ ((A
∈ ℕ ∧ B ∈ ℕ)
→ ((A < B ∨ A =
B) ↔ A < (B +
1))) |
| 197 | 4, 196 | bitrd 406 |
1
⊢ ((A
∈ ℕ ∧ B ∈ ℕ)
→ (A ≤ B ↔ A <
(B + 1))) |