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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 9412 | . . . 4 ⊢ 𝐵 ∈ ℝ |
| 4 | decle.3 | . . . . 5 ⊢ 𝐶 ∈ ℕ0 | |
| 5 | 4 | nn0rei 9412 | . . . 4 ⊢ 𝐶 ∈ ℝ |
| 6 | 10nn0 9627 | . . . . . 6 ⊢ ;10 ∈ ℕ0 | |
| 7 | decle.1 | . . . . . 6 ⊢ 𝐴 ∈ ℕ0 | |
| 8 | 6, 7 | nn0mulcli 9439 | . . . . 5 ⊢ (;10 · 𝐴) ∈ ℕ0 |
| 9 | 8 | nn0rei 9412 | . . . 4 ⊢ (;10 · 𝐴) ∈ ℝ |
| 10 | 3, 5, 9 | leadd2i 8683 | . . 3 ⊢ (𝐵 ≤ 𝐶 ↔ ((;10 · 𝐴) + 𝐵) ≤ ((;10 · 𝐴) + 𝐶)) |
| 11 | 1, 10 | mpbi 145 | . 2 ⊢ ((;10 · 𝐴) + 𝐵) ≤ ((;10 · 𝐴) + 𝐶) |
| 12 | dfdec10 9613 | . 2 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 13 | dfdec10 9613 | . 2 ⊢ ;𝐴𝐶 = ((;10 · 𝐴) + 𝐶) | |
| 14 | 11, 12, 13 | 3brtr4i 4118 | 1 ⊢ ;𝐴𝐵 ≤ ;𝐴𝐶 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 class class class wbr 4088 (class class class)co 6017 0cc0 8031 1c1 8032 + caddc 8034 · cmul 8036 ≤ cle 8214 ℕ0cn0 9401 ;cdc 9610 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-addcom 8131 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-i2m1 8136 ax-1rid 8138 ax-0id 8139 ax-rnegex 8140 ax-cnre 8142 ax-pre-ltadd 8147 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-iota 5286 df-fun 5328 df-fv 5334 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-inn 9143 df-2 9201 df-3 9202 df-4 9203 df-5 9204 df-6 9205 df-7 9206 df-8 9207 df-9 9208 df-n0 9402 df-dec 9611 |
| This theorem is referenced by: (None) |
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