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| Mirrors > Home > MPE Home > Th. List > divcan1i | Structured version Visualization version GIF version | ||
| Description: A cancellation law for division. (Contributed by NM, 18-May-1999.) |
| Ref | Expression |
|---|---|
| divclz.1 | ⊢ 𝐴 ∈ ℂ |
| divclz.2 | ⊢ 𝐵 ∈ ℂ |
| divcl.3 | ⊢ 𝐵 ≠ 0 |
| Ref | Expression |
|---|---|
| divcan1i | ⊢ ((𝐴 / 𝐵) · 𝐵) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | divclz.2 | . 2 ⊢ 𝐵 ∈ ℂ | |
| 2 | divclz.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
| 3 | divcl.3 | . . 3 ⊢ 𝐵 ≠ 0 | |
| 4 | 2, 1, 3 | divcli 12099 | . 2 ⊢ (𝐴 / 𝐵) ∈ ℂ |
| 5 | 2, 1, 3 | divcan2i 12100 | . 2 ⊢ (𝐵 · (𝐴 / 𝐵)) = 𝐴 |
| 6 | 1, 4, 5 | mulcomli 11357 | 1 ⊢ ((𝐴 / 𝐵) · 𝐵) = 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2147 ≠ wne 2959 (class class class)co 7451 ℂcc 11237 0cc0 11239 · cmul 11244 / cdiv 12013 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-po 5566 df-so 5567 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 |
| This theorem is used by: pcoass 25400 ang180lem2 27195 ang180lem3 27196 atantan 27308 ipdirilem 31488 threehalves 33577 cos9thpiminplylem4 34528 goldratmolem3 48207 |
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