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| Mirrors > Home > MPE Home > Th. List > subeq0i | Structured version Visualization version GIF version | ||
| Description: If the difference between two numbers is zero, they are equal. (Contributed by NM, 8-May-1999.) |
| Ref | Expression |
|---|---|
| negidi.1 | ⊢ 𝐴 ∈ ℂ |
| pncan3i.2 | ⊢ 𝐵 ∈ ℂ |
| Ref | Expression |
|---|---|
| subeq0i | ⊢ ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | negidi.1 | . 2 ⊢ 𝐴 ∈ ℂ | |
| 2 | pncan3i.2 | . 2 ⊢ 𝐵 ∈ ℂ | |
| 3 | subeq0 11412 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵)) | |
| 4 | 1, 2, 3 | mp2an 698 | 1 ⊢ ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 = wceq 1547 ∈ wcel 2119 (class class class)co 7357 ℂcc 11028 0cc0 11030 − cmin 11369 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5219 ax-nul 5229 ax-pow 5295 ax-pr 5363 ax-un 7679 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4263 df-if 4456 df-pw 4532 df-sn 4557 df-pr 4559 df-op 4563 df-uni 4840 df-br 5074 df-opab 5136 df-mpt 5155 df-id 5514 df-po 5527 df-so 5528 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-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 7314 df-ov 7360 df-oprab 7361 df-mpo 7362 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 df-pnf 11173 df-mnf 11174 df-ltxr 11176 df-sub 11371 |
| This theorem is referenced by: sqeqori 14168 subsq0i 14169 bpoly3 16015 3dvds 16292 ax5seglem7 29023 siilem1 30941 h1de2i 31643 |
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