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| Mirrors > Home > MPE Home > Th. List > subeq0 | Structured version Visualization version GIF version | ||
| Description: If the difference between two numbers is zero, they are equal. (Contributed by NM, 16-Nov-1999.) |
| Ref | Expression |
|---|---|
| subeq0 | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subid 11616 | . . . 4 ⊢ (𝐵 ∈ ℂ → (𝐵 − 𝐵) = 0) | |
| 2 | 1 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 − 𝐵) = 0) |
| 3 | 2 | eqeq2d 2774 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ (𝐴 − 𝐵) = 0)) |
| 4 | subcan2 11622 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ 𝐴 = 𝐵)) | |
| 5 | 4 | 3anidm23 1449 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ 𝐴 = 𝐵)) |
| 6 | 3, 5 | bitr3d 284 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 (class class class)co 7451 ℂcc 11237 0cc0 11239 − cmin 11580 |
| 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 |
| 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-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-ltxr 11387 df-sub 11582 |
| This theorem is used by: subeq0i 11677 subeq0ad 11716 mulcan1g 12009 div2sub 12182 cju 12356 nn0sub 12696 addmodlteq 14129 geoserg 16079 geolim 16083 geolim2 16084 georeclim 16085 geoisum1c 16093 tanadd 16379 fzocongeq 16538 divalglem8 16614 mndodcongi 19808 odf1 19827 odf1o1 19837 cnmet 25145 iccpnfhmeo 25321 plyremlem 26680 geolim3 26723 abelthlem2 26816 abelthlem7 26822 efeq1 26913 tanregt0 26924 logtayl 27045 ang180lem1 27194 ang180lem2 27195 ang180lem3 27196 lawcos 27201 isosctrlem1 27203 isosctrlem2 27204 atandm2 27262 atandm4 27264 2efiatan 27303 tanatan 27304 dvatan 27320 mumullem2 27564 mersenne 27611 dchrsum2 27652 sumdchr2 27654 addsq2reu 27824 axcgrid 29551 axcontlem2 29600 hvmulcan2 31732 esplyind 34318 poimirlem13 38819 rencldnfilem 44093 qirropth 44181 dvconstbi 45579 isosctrlem1ALT 46176 rrx2pnedifcoorneor 50160 rrx2pnedifcoorneorr 50161 |
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