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Mirrors > Home > ILE Home > Th. List > 3dec | GIF version |
Description: A "decimal constructor" which is used to build up "decimal integers" or "numeric terms" in base 10 with 3 "digits". (Contributed by AV, 14-Jun-2021.) (Revised by AV, 1-Aug-2021.) |
Ref | Expression |
---|---|
3dec.a | ⊢ 𝐴 ∈ ℕ0 |
3dec.b | ⊢ 𝐵 ∈ ℕ0 |
Ref | Expression |
---|---|
3dec | ⊢ ;;𝐴𝐵𝐶 = ((((;10↑2) · 𝐴) + (;10 · 𝐵)) + 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfdec10 8480 | . 2 ⊢ ;;𝐴𝐵𝐶 = ((;10 · ;𝐴𝐵) + 𝐶) | |
2 | dfdec10 8480 | . . . . . 6 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
3 | 2 | oveq2i 5543 | . . . . 5 ⊢ (;10 · ;𝐴𝐵) = (;10 · ((;10 · 𝐴) + 𝐵)) |
4 | 1nn 8050 | . . . . . . . 8 ⊢ 1 ∈ ℕ | |
5 | 4 | decnncl2 8500 | . . . . . . 7 ⊢ ;10 ∈ ℕ |
6 | 5 | nncni 8049 | . . . . . 6 ⊢ ;10 ∈ ℂ |
7 | 3dec.a | . . . . . . . 8 ⊢ 𝐴 ∈ ℕ0 | |
8 | 7 | nn0cni 8300 | . . . . . . 7 ⊢ 𝐴 ∈ ℂ |
9 | 6, 8 | mulcli 7124 | . . . . . 6 ⊢ (;10 · 𝐴) ∈ ℂ |
10 | 3dec.b | . . . . . . 7 ⊢ 𝐵 ∈ ℕ0 | |
11 | 10 | nn0cni 8300 | . . . . . 6 ⊢ 𝐵 ∈ ℂ |
12 | 6, 9, 11 | adddii 7129 | . . . . 5 ⊢ (;10 · ((;10 · 𝐴) + 𝐵)) = ((;10 · (;10 · 𝐴)) + (;10 · 𝐵)) |
13 | 3, 12 | eqtri 2101 | . . . 4 ⊢ (;10 · ;𝐴𝐵) = ((;10 · (;10 · 𝐴)) + (;10 · 𝐵)) |
14 | 6, 6, 8 | mulassi 7128 | . . . . . . 7 ⊢ ((;10 · ;10) · 𝐴) = (;10 · (;10 · 𝐴)) |
15 | 14 | eqcomi 2085 | . . . . . 6 ⊢ (;10 · (;10 · 𝐴)) = ((;10 · ;10) · 𝐴) |
16 | 6 | sqvali 9555 | . . . . . . . 8 ⊢ (;10↑2) = (;10 · ;10) |
17 | 16 | eqcomi 2085 | . . . . . . 7 ⊢ (;10 · ;10) = (;10↑2) |
18 | 17 | oveq1i 5542 | . . . . . 6 ⊢ ((;10 · ;10) · 𝐴) = ((;10↑2) · 𝐴) |
19 | 15, 18 | eqtri 2101 | . . . . 5 ⊢ (;10 · (;10 · 𝐴)) = ((;10↑2) · 𝐴) |
20 | 19 | oveq1i 5542 | . . . 4 ⊢ ((;10 · (;10 · 𝐴)) + (;10 · 𝐵)) = (((;10↑2) · 𝐴) + (;10 · 𝐵)) |
21 | 13, 20 | eqtri 2101 | . . 3 ⊢ (;10 · ;𝐴𝐵) = (((;10↑2) · 𝐴) + (;10 · 𝐵)) |
22 | 21 | oveq1i 5542 | . 2 ⊢ ((;10 · ;𝐴𝐵) + 𝐶) = ((((;10↑2) · 𝐴) + (;10 · 𝐵)) + 𝐶) |
23 | 1, 22 | eqtri 2101 | 1 ⊢ ;;𝐴𝐵𝐶 = ((((;10↑2) · 𝐴) + (;10 · 𝐵)) + 𝐶) |
Colors of variables: wff set class |
Syntax hints: = wceq 1284 ∈ wcel 1433 (class class class)co 5532 0cc0 6981 1c1 6982 + caddc 6984 · cmul 6986 2c2 8089 ℕ0cn0 8288 ;cdc 8477 ↑cexp 9475 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-coll 3893 ax-sep 3896 ax-nul 3904 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-iinf 4329 ax-cnex 7067 ax-resscn 7068 ax-1cn 7069 ax-1re 7070 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-mulrcl 7075 ax-addcom 7076 ax-mulcom 7077 ax-addass 7078 ax-mulass 7079 ax-distr 7080 ax-i2m1 7081 ax-0lt1 7082 ax-1rid 7083 ax-0id 7084 ax-rnegex 7085 ax-precex 7086 ax-cnre 7087 ax-pre-ltirr 7088 ax-pre-ltwlin 7089 ax-pre-lttrn 7090 ax-pre-apti 7091 ax-pre-ltadd 7092 ax-pre-mulgt0 7093 ax-pre-mulext 7094 |
This theorem depends on definitions: df-bi 115 df-dc 776 df-3or 920 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-reu 2355 df-rmo 2356 df-rab 2357 df-v 2603 df-sbc 2816 df-csb 2909 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-nul 3252 df-if 3352 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-int 3637 df-iun 3680 df-br 3786 df-opab 3840 df-mpt 3841 df-tr 3876 df-id 4048 df-po 4051 df-iso 4052 df-iord 4121 df-on 4123 df-suc 4126 df-iom 4332 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-f1 4927 df-fo 4928 df-f1o 4929 df-fv 4930 df-riota 5488 df-ov 5535 df-oprab 5536 df-mpt2 5537 df-1st 5787 df-2nd 5788 df-recs 5943 df-frec 6001 df-pnf 7155 df-mnf 7156 df-xr 7157 df-ltxr 7158 df-le 7159 df-sub 7281 df-neg 7282 df-reap 7675 df-ap 7682 df-div 7761 df-inn 8040 df-2 8098 df-3 8099 df-4 8100 df-5 8101 df-6 8102 df-7 8103 df-8 8104 df-9 8105 df-n0 8289 df-z 8352 df-dec 8478 df-uz 8620 df-iseq 9432 df-iexp 9476 |
This theorem is referenced by: 3dvds2dec 10265 |
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