| Step | Hyp | Ref
| Expression |
| 1 | | resqrexlemdecn.n |
. . . . 5
⊢ (𝜑 → 𝑁 ∈ ℕ) |
| 2 | 1 | nnzd 9447 |
. . . 4
⊢ (𝜑 → 𝑁 ∈ ℤ) |
| 3 | 2 | peano2zd 9451 |
. . 3
⊢ (𝜑 → (𝑁 + 1) ∈ ℤ) |
| 4 | | resqrexlemdecn.m |
. . . 4
⊢ (𝜑 → 𝑀 ∈ ℕ) |
| 5 | 4 | nnzd 9447 |
. . 3
⊢ (𝜑 → 𝑀 ∈ ℤ) |
| 6 | | resqrexlemdecn.nm |
. . . 4
⊢ (𝜑 → 𝑁 < 𝑀) |
| 7 | | nnltp1le 9386 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ 𝑀 ∈ ℕ) → (𝑁 < 𝑀 ↔ (𝑁 + 1) ≤ 𝑀)) |
| 8 | 1, 4, 7 | syl2anc 411 |
. . . 4
⊢ (𝜑 → (𝑁 < 𝑀 ↔ (𝑁 + 1) ≤ 𝑀)) |
| 9 | 6, 8 | mpbid 147 |
. . 3
⊢ (𝜑 → (𝑁 + 1) ≤ 𝑀) |
| 10 | | fveq2 5558 |
. . . . . 6
⊢ (𝑤 = (𝑁 + 1) → (𝐹‘𝑤) = (𝐹‘(𝑁 + 1))) |
| 11 | 10 | breq1d 4043 |
. . . . 5
⊢ (𝑤 = (𝑁 + 1) → ((𝐹‘𝑤) < (𝐹‘𝑁) ↔ (𝐹‘(𝑁 + 1)) < (𝐹‘𝑁))) |
| 12 | 11 | imbi2d 230 |
. . . 4
⊢ (𝑤 = (𝑁 + 1) → ((𝜑 → (𝐹‘𝑤) < (𝐹‘𝑁)) ↔ (𝜑 → (𝐹‘(𝑁 + 1)) < (𝐹‘𝑁)))) |
| 13 | | fveq2 5558 |
. . . . . 6
⊢ (𝑤 = 𝑘 → (𝐹‘𝑤) = (𝐹‘𝑘)) |
| 14 | 13 | breq1d 4043 |
. . . . 5
⊢ (𝑤 = 𝑘 → ((𝐹‘𝑤) < (𝐹‘𝑁) ↔ (𝐹‘𝑘) < (𝐹‘𝑁))) |
| 15 | 14 | imbi2d 230 |
. . . 4
⊢ (𝑤 = 𝑘 → ((𝜑 → (𝐹‘𝑤) < (𝐹‘𝑁)) ↔ (𝜑 → (𝐹‘𝑘) < (𝐹‘𝑁)))) |
| 16 | | fveq2 5558 |
. . . . . 6
⊢ (𝑤 = (𝑘 + 1) → (𝐹‘𝑤) = (𝐹‘(𝑘 + 1))) |
| 17 | 16 | breq1d 4043 |
. . . . 5
⊢ (𝑤 = (𝑘 + 1) → ((𝐹‘𝑤) < (𝐹‘𝑁) ↔ (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁))) |
| 18 | 17 | imbi2d 230 |
. . . 4
⊢ (𝑤 = (𝑘 + 1) → ((𝜑 → (𝐹‘𝑤) < (𝐹‘𝑁)) ↔ (𝜑 → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁)))) |
| 19 | | fveq2 5558 |
. . . . . 6
⊢ (𝑤 = 𝑀 → (𝐹‘𝑤) = (𝐹‘𝑀)) |
| 20 | 19 | breq1d 4043 |
. . . . 5
⊢ (𝑤 = 𝑀 → ((𝐹‘𝑤) < (𝐹‘𝑁) ↔ (𝐹‘𝑀) < (𝐹‘𝑁))) |
| 21 | 20 | imbi2d 230 |
. . . 4
⊢ (𝑤 = 𝑀 → ((𝜑 → (𝐹‘𝑤) < (𝐹‘𝑁)) ↔ (𝜑 → (𝐹‘𝑀) < (𝐹‘𝑁)))) |
| 22 | | resqrexlemex.seq |
. . . . . . 7
⊢ 𝐹 = seq1((𝑦 ∈ ℝ+, 𝑧 ∈ ℝ+
↦ ((𝑦 + (𝐴 / 𝑦)) / 2)), (ℕ × {(1 + 𝐴)})) |
| 23 | | resqrexlemex.a |
. . . . . . 7
⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 24 | | resqrexlemex.agt0 |
. . . . . . 7
⊢ (𝜑 → 0 ≤ 𝐴) |
| 25 | 22, 23, 24 | resqrexlemdec 11176 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑁 ∈ ℕ) → (𝐹‘(𝑁 + 1)) < (𝐹‘𝑁)) |
| 26 | 1, 25 | mpdan 421 |
. . . . 5
⊢ (𝜑 → (𝐹‘(𝑁 + 1)) < (𝐹‘𝑁)) |
| 27 | 26 | a1i 9 |
. . . 4
⊢ ((𝑁 + 1) ∈ ℤ →
(𝜑 → (𝐹‘(𝑁 + 1)) < (𝐹‘𝑁))) |
| 28 | 22, 23, 24 | resqrexlemf 11172 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐹:ℕ⟶ℝ+) |
| 29 | 28 | ad2antrr 488 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝐹:ℕ⟶ℝ+) |
| 30 | | simplr2 1042 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝑘 ∈ ℤ) |
| 31 | | 1red 8041 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 1 ∈ ℝ) |
| 32 | 3 | ad2antrr 488 |
. . . . . . . . . . . . . 14
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝑁 + 1) ∈ ℤ) |
| 33 | 32 | zred 9448 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝑁 + 1) ∈ ℝ) |
| 34 | 30 | zred 9448 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝑘 ∈ ℝ) |
| 35 | 1 | nnred 9003 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → 𝑁 ∈ ℝ) |
| 36 | 1 | nngt0d 9034 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → 0 < 𝑁) |
| 37 | | 0re 8026 |
. . . . . . . . . . . . . . . . 17
⊢ 0 ∈
ℝ |
| 38 | | ltle 8114 |
. . . . . . . . . . . . . . . . 17
⊢ ((0
∈ ℝ ∧ 𝑁
∈ ℝ) → (0 < 𝑁 → 0 ≤ 𝑁)) |
| 39 | 37, 38 | mpan 424 |
. . . . . . . . . . . . . . . 16
⊢ (𝑁 ∈ ℝ → (0 <
𝑁 → 0 ≤ 𝑁)) |
| 40 | 35, 36, 39 | sylc 62 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → 0 ≤ 𝑁) |
| 41 | | 1red 8041 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → 1 ∈
ℝ) |
| 42 | 41, 35 | addge02d 8561 |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (0 ≤ 𝑁 ↔ 1 ≤ (𝑁 + 1))) |
| 43 | 40, 42 | mpbid 147 |
. . . . . . . . . . . . . 14
⊢ (𝜑 → 1 ≤ (𝑁 + 1)) |
| 44 | 43 | ad2antrr 488 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 1 ≤ (𝑁 + 1)) |
| 45 | | simplr3 1043 |
. . . . . . . . . . . . 13
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝑁 + 1) ≤ 𝑘) |
| 46 | 31, 33, 34, 44, 45 | letrd 8150 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 1 ≤ 𝑘) |
| 47 | | elnnz1 9349 |
. . . . . . . . . . . 12
⊢ (𝑘 ∈ ℕ ↔ (𝑘 ∈ ℤ ∧ 1 ≤
𝑘)) |
| 48 | 30, 46, 47 | sylanbrc 417 |
. . . . . . . . . . 11
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝑘 ∈ ℕ) |
| 49 | 48 | peano2nnd 9005 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝑘 + 1) ∈ ℕ) |
| 50 | 29, 49 | ffvelcdmd 5698 |
. . . . . . . . 9
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘(𝑘 + 1)) ∈
ℝ+) |
| 51 | 50 | rpred 9771 |
. . . . . . . 8
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘(𝑘 + 1)) ∈ ℝ) |
| 52 | 29, 48 | ffvelcdmd 5698 |
. . . . . . . . 9
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘𝑘) ∈
ℝ+) |
| 53 | 52 | rpred 9771 |
. . . . . . . 8
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘𝑘) ∈ ℝ) |
| 54 | 1 | ad2antrr 488 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝑁 ∈ ℕ) |
| 55 | 29, 54 | ffvelcdmd 5698 |
. . . . . . . . 9
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘𝑁) ∈
ℝ+) |
| 56 | 55 | rpred 9771 |
. . . . . . . 8
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘𝑁) ∈ ℝ) |
| 57 | | simpll 527 |
. . . . . . . . 9
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → 𝜑) |
| 58 | 22, 23, 24 | resqrexlemdec 11176 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑘)) |
| 59 | 57, 48, 58 | syl2anc 411 |
. . . . . . . 8
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑘)) |
| 60 | | simpr 110 |
. . . . . . . 8
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘𝑘) < (𝐹‘𝑁)) |
| 61 | 51, 53, 56, 59, 60 | lttrd 8152 |
. . . . . . 7
⊢ (((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) ∧ (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁)) |
| 62 | 61 | ex 115 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘)) → ((𝐹‘𝑘) < (𝐹‘𝑁) → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁))) |
| 63 | 62 | expcom 116 |
. . . . 5
⊢ (((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘) → (𝜑 → ((𝐹‘𝑘) < (𝐹‘𝑁) → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁)))) |
| 64 | 63 | a2d 26 |
. . . 4
⊢ (((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑘) → ((𝜑 → (𝐹‘𝑘) < (𝐹‘𝑁)) → (𝜑 → (𝐹‘(𝑘 + 1)) < (𝐹‘𝑁)))) |
| 65 | 12, 15, 18, 21, 27, 64 | uzind 9437 |
. . 3
⊢ (((𝑁 + 1) ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ (𝑁 + 1) ≤ 𝑀) → (𝜑 → (𝐹‘𝑀) < (𝐹‘𝑁))) |
| 66 | 3, 5, 9, 65 | syl3anc 1249 |
. 2
⊢ (𝜑 → (𝜑 → (𝐹‘𝑀) < (𝐹‘𝑁))) |
| 67 | 66 | pm2.43i 49 |
1
⊢ (𝜑 → (𝐹‘𝑀) < (𝐹‘𝑁)) |