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| Mirrors > Home > ILE Home > Th. List > decle | GIF version | ||
| Description: Comparing two decimal integers (equal higher places). (Contributed by AV, 17-Aug-2021.) (Revised by AV, 8-Sep-2021.) |
| Ref | Expression |
|---|---|
| decle.1 | ⊢ 𝐴 ∈ ℕ0 |
| decle.2 | ⊢ 𝐵 ∈ ℕ0 |
| decle.3 | ⊢ 𝐶 ∈ ℕ0 |
| decle.4 | ⊢ 𝐵 ≤ 𝐶 |
| Ref | Expression |
|---|---|
| decle | ⊢ ;𝐴𝐵 ≤ ;𝐴𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | decle.4 | . . 3 ⊢ 𝐵 ≤ 𝐶 | |
| 2 | decle.2 | . . . . 5 ⊢ 𝐵 ∈ ℕ0 | |
| 3 | 2 | nn0rei 9403 | . . . 4 ⊢ 𝐵 ∈ ℝ |
| 4 | decle.3 | . . . . 5 ⊢ 𝐶 ∈ ℕ0 | |
| 5 | 4 | nn0rei 9403 | . . . 4 ⊢ 𝐶 ∈ ℝ |
| 6 | 10nn0 9618 | . . . . . 6 ⊢ ;10 ∈ ℕ0 | |
| 7 | decle.1 | . . . . . 6 ⊢ 𝐴 ∈ ℕ0 | |
| 8 | 6, 7 | nn0mulcli 9430 | . . . . 5 ⊢ (;10 · 𝐴) ∈ ℕ0 |
| 9 | 8 | nn0rei 9403 | . . . 4 ⊢ (;10 · 𝐴) ∈ ℝ |
| 10 | 3, 5, 9 | leadd2i 8674 | . . 3 ⊢ (𝐵 ≤ 𝐶 ↔ ((;10 · 𝐴) + 𝐵) ≤ ((;10 · 𝐴) + 𝐶)) |
| 11 | 1, 10 | mpbi 145 | . 2 ⊢ ((;10 · 𝐴) + 𝐵) ≤ ((;10 · 𝐴) + 𝐶) |
| 12 | dfdec10 9604 | . 2 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 13 | dfdec10 9604 | . 2 ⊢ ;𝐴𝐶 = ((;10 · 𝐴) + 𝐶) | |
| 14 | 11, 12, 13 | 3brtr4i 4116 | 1 ⊢ ;𝐴𝐵 ≤ ;𝐴𝐶 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 class class class wbr 4086 (class class class)co 6013 0cc0 8022 1c1 8023 + caddc 8025 · cmul 8027 ≤ cle 8205 ℕ0cn0 9392 ;cdc 9601 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-mulcom 8123 ax-addass 8124 ax-mulass 8125 ax-distr 8126 ax-i2m1 8127 ax-1rid 8129 ax-0id 8130 ax-rnegex 8131 ax-cnre 8133 ax-pre-ltadd 8138 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-opab 4149 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-iota 5284 df-fun 5326 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-pnf 8206 df-mnf 8207 df-xr 8208 df-ltxr 8209 df-le 8210 df-sub 8342 df-inn 9134 df-2 9192 df-3 9193 df-4 9194 df-5 9195 df-6 9196 df-7 9197 df-8 9198 df-9 9199 df-n0 9393 df-dec 9602 |
| This theorem is referenced by: (None) |
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