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Mirrors > Home > ILE Home > Th. List > numsucc | GIF version |
Description: The successor of a decimal integer (with carry). (Contributed by Mario Carneiro, 18-Feb-2014.) |
Ref | Expression |
---|---|
numsucc.1 | ⊢ 𝑌 ∈ ℕ0 |
numsucc.2 | ⊢ 𝑇 = (𝑌 + 1) |
numsucc.3 | ⊢ 𝐴 ∈ ℕ0 |
numsucc.4 | ⊢ (𝐴 + 1) = 𝐵 |
numsucc.5 | ⊢ 𝑁 = ((𝑇 · 𝐴) + 𝑌) |
Ref | Expression |
---|---|
numsucc | ⊢ (𝑁 + 1) = ((𝑇 · 𝐵) + 0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | numsucc.2 | . . . . . . 7 ⊢ 𝑇 = (𝑌 + 1) | |
2 | numsucc.1 | . . . . . . . 8 ⊢ 𝑌 ∈ ℕ0 | |
3 | 1nn0 9130 | . . . . . . . 8 ⊢ 1 ∈ ℕ0 | |
4 | 2, 3 | nn0addcli 9151 | . . . . . . 7 ⊢ (𝑌 + 1) ∈ ℕ0 |
5 | 1, 4 | eqeltri 2239 | . . . . . 6 ⊢ 𝑇 ∈ ℕ0 |
6 | 5 | nn0cni 9126 | . . . . 5 ⊢ 𝑇 ∈ ℂ |
7 | 6 | mulid1i 7901 | . . . 4 ⊢ (𝑇 · 1) = 𝑇 |
8 | 7 | oveq2i 5853 | . . 3 ⊢ ((𝑇 · 𝐴) + (𝑇 · 1)) = ((𝑇 · 𝐴) + 𝑇) |
9 | numsucc.3 | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
10 | 9 | nn0cni 9126 | . . . 4 ⊢ 𝐴 ∈ ℂ |
11 | ax-1cn 7846 | . . . 4 ⊢ 1 ∈ ℂ | |
12 | 6, 10, 11 | adddii 7909 | . . 3 ⊢ (𝑇 · (𝐴 + 1)) = ((𝑇 · 𝐴) + (𝑇 · 1)) |
13 | 1 | eqcomi 2169 | . . . 4 ⊢ (𝑌 + 1) = 𝑇 |
14 | numsucc.5 | . . . 4 ⊢ 𝑁 = ((𝑇 · 𝐴) + 𝑌) | |
15 | 5, 9, 2, 13, 14 | numsuc 9335 | . . 3 ⊢ (𝑁 + 1) = ((𝑇 · 𝐴) + 𝑇) |
16 | 8, 12, 15 | 3eqtr4ri 2197 | . 2 ⊢ (𝑁 + 1) = (𝑇 · (𝐴 + 1)) |
17 | numsucc.4 | . . 3 ⊢ (𝐴 + 1) = 𝐵 | |
18 | 17 | oveq2i 5853 | . 2 ⊢ (𝑇 · (𝐴 + 1)) = (𝑇 · 𝐵) |
19 | 9, 3 | nn0addcli 9151 | . . . 4 ⊢ (𝐴 + 1) ∈ ℕ0 |
20 | 17, 19 | eqeltrri 2240 | . . 3 ⊢ 𝐵 ∈ ℕ0 |
21 | 5, 20 | num0u 9332 | . 2 ⊢ (𝑇 · 𝐵) = ((𝑇 · 𝐵) + 0) |
22 | 16, 18, 21 | 3eqtri 2190 | 1 ⊢ (𝑁 + 1) = ((𝑇 · 𝐵) + 0) |
Colors of variables: wff set class |
Syntax hints: = wceq 1343 ∈ wcel 2136 (class class class)co 5842 0cc0 7753 1c1 7754 + caddc 7756 · cmul 7758 ℕ0cn0 9114 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-addcom 7853 ax-mulcom 7854 ax-addass 7855 ax-mulass 7856 ax-distr 7857 ax-i2m1 7858 ax-1rid 7860 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-iota 5153 df-fun 5190 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-sub 8071 df-inn 8858 df-n0 9115 |
This theorem is referenced by: decsucc 9362 |
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