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| Mirrors > Home > MPE Home > Th. List > decsubi | Structured version Visualization version GIF version | ||
| Description: Difference between a numeral 𝑀 and a nonnegative integer 𝑁 (no underflow). (Contributed by AV, 22-Jul-2021.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| decaddi.1 | ⊢ 𝐴 ∈ ℕ0 |
| decaddi.2 | ⊢ 𝐵 ∈ ℕ0 |
| decaddi.3 | ⊢ 𝑁 ∈ ℕ0 |
| decaddi.4 | ⊢ 𝑀 = ;𝐴𝐵 |
| decaddci.5 | ⊢ (𝐴 + 1) = 𝐷 |
| decsubi.5 | ⊢ (𝐵 − 𝑁) = 𝐶 |
| Ref | Expression |
|---|---|
| decsubi | ⊢ (𝑀 − 𝑁) = ;𝐴𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 10nn0 12612 | . . . . 5 ⊢ ;10 ∈ ℕ0 | |
| 2 | decaddi.1 | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 3 | 1, 2 | nn0mulcli 12426 | . . . 4 ⊢ (;10 · 𝐴) ∈ ℕ0 |
| 4 | 3 | nn0cni 12400 | . . 3 ⊢ (;10 · 𝐴) ∈ ℂ |
| 5 | decaddi.2 | . . . 4 ⊢ 𝐵 ∈ ℕ0 | |
| 6 | 5 | nn0cni 12400 | . . 3 ⊢ 𝐵 ∈ ℂ |
| 7 | decaddi.3 | . . . 4 ⊢ 𝑁 ∈ ℕ0 | |
| 8 | 7 | nn0cni 12400 | . . 3 ⊢ 𝑁 ∈ ℂ |
| 9 | 4, 6, 8 | addsubassi 11459 | . 2 ⊢ (((;10 · 𝐴) + 𝐵) − 𝑁) = ((;10 · 𝐴) + (𝐵 − 𝑁)) |
| 10 | decaddi.4 | . . . 4 ⊢ 𝑀 = ;𝐴𝐵 | |
| 11 | dfdec10 12597 | . . . 4 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 12 | 10, 11 | eqtri 2756 | . . 3 ⊢ 𝑀 = ((;10 · 𝐴) + 𝐵) |
| 13 | 12 | oveq1i 7362 | . 2 ⊢ (𝑀 − 𝑁) = (((;10 · 𝐴) + 𝐵) − 𝑁) |
| 14 | dfdec10 12597 | . . 3 ⊢ ;𝐴𝐶 = ((;10 · 𝐴) + 𝐶) | |
| 15 | decsubi.5 | . . . . 5 ⊢ (𝐵 − 𝑁) = 𝐶 | |
| 16 | 15 | eqcomi 2742 | . . . 4 ⊢ 𝐶 = (𝐵 − 𝑁) |
| 17 | 16 | oveq2i 7363 | . . 3 ⊢ ((;10 · 𝐴) + 𝐶) = ((;10 · 𝐴) + (𝐵 − 𝑁)) |
| 18 | 14, 17 | eqtri 2756 | . 2 ⊢ ;𝐴𝐶 = ((;10 · 𝐴) + (𝐵 − 𝑁)) |
| 19 | 9, 13, 18 | 3eqtr4i 2766 | 1 ⊢ (𝑀 − 𝑁) = ;𝐴𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2113 (class class class)co 7352 0cc0 11013 1c1 11014 + caddc 11016 · cmul 11018 − cmin 11351 ℕ0cn0 12388 ;cdc 12594 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11155 df-mnf 11156 df-ltxr 11158 df-sub 11353 df-nn 12133 df-2 12195 df-3 12196 df-4 12197 df-5 12198 df-6 12199 df-7 12200 df-8 12201 df-9 12202 df-n0 12389 df-dec 12595 |
| This theorem is referenced by: fmtno5 47681 m5prm 47722 m7prm 47724 m11nprm 47725 341fppr2 47858 ackval41 48820 |
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