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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 11570 | . . . 4 ⊢ (𝐵 ∈ ℂ → (𝐵 − 𝐵) = 0) | |
| 2 | 1 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 − 𝐵) = 0) |
| 3 | 2 | eqeq2d 2772 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = (𝐵 − 𝐵) ↔ (𝐴 − 𝐵) = 0)) |
| 4 | subcan2 11576 | . . 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 1570 ∈ wcel 2145 (class class class)co 7418 ℂcc 11191 0cc0 11193 − cmin 11534 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 |
| 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 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-ltxr 11341 df-sub 11536 |
| This theorem is used by: subeq0i 11631 subeq0ad 11670 mulcan1g 11962 div2sub 12135 cju 12309 nn0sub 12649 addmodlteq 14082 geoserg 16028 geolim 16032 geolim2 16033 georeclim 16034 geoisum1c 16042 tanadd 16328 fzocongeq 16487 divalglem8 16563 mndodcongi 19750 odf1 19769 odf1o1 19779 cnmet 25083 iccpnfhmeo 25259 plyremlem 26618 geolim3 26659 abelthlem2 26752 abelthlem7 26758 efeq1 26849 tanregt0 26860 logtayl 26981 ang180lem1 27130 ang180lem2 27131 ang180lem3 27132 lawcos 27137 isosctrlem1 27139 isosctrlem2 27140 atandm2 27198 atandm4 27200 2efiatan 27239 tanatan 27240 dvatan 27256 mumullem2 27500 mersenne 27547 dchrsum2 27588 sumdchr2 27590 addsq2reu 27760 axcgrid 29487 axcontlem2 29536 hvmulcan2 31668 esplyind 34200 poimirlem13 38531 rencldnfilem 43806 qirropth 43894 dvconstbi 45303 isosctrlem1ALT 45901 rrx2pnedifcoorneor 49797 rrx2pnedifcoorneorr 49798 |
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