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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 11577 | . . . 4 ⊢ (𝐵 ∈ ℂ → (𝐵 − 𝐵) = 0) | |
| 2 | 1 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 − 𝐵) = 0) |
| 3 | 2 | eqeq2d 2771 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ (𝐴 − 𝐵) = 0)) |
| 4 | subcan2 11583 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ 𝐴 = 𝐵)) | |
| 5 | 4 | 3anidm23 1448 | . 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 1569 ∈ wcel 2144 (class class class)co 7420 ℂcc 11198 0cc0 11200 − cmin 11541 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-ltxr 11348 df-sub 11543 |
| This theorem is used by: subeq0i 11638 subeq0ad 11677 mulcan1g 11969 div2sub 12142 cju 12316 nn0sub 12656 addmodlteq 14089 geoserg 16035 geolim 16039 geolim2 16040 georeclim 16041 geoisum1c 16049 tanadd 16335 fzocongeq 16494 divalglem8 16570 mndodcongi 19757 odf1 19776 odf1o1 19786 cnmet 25090 iccpnfhmeo 25266 plyremlem 26625 geolim3 26666 abelthlem2 26759 abelthlem7 26765 efeq1 26856 tanregt0 26867 logtayl 26988 ang180lem1 27137 ang180lem2 27138 ang180lem3 27139 lawcos 27144 isosctrlem1 27146 isosctrlem2 27147 atandm2 27205 atandm4 27207 2efiatan 27246 tanatan 27247 dvatan 27263 mumullem2 27507 mersenne 27554 dchrsum2 27595 sumdchr2 27597 addsq2reu 27767 axcgrid 29494 axcontlem2 29543 hvmulcan2 31675 esplyind 34207 poimirlem13 38552 rencldnfilem 43827 qirropth 43915 dvconstbi 45318 isosctrlem1ALT 45916 rrx2pnedifcoorneor 49828 rrx2pnedifcoorneorr 49829 |
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