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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sn-addcand | Structured version Visualization version GIF version | ||
| Description: addcand 11428 without ax-mulcom 11179. Note how the proof is almost identical to addcan 11409. (Contributed by SN, 5-May-2024.) |
| Ref | Expression |
|---|---|
| sn-addcand.a | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| sn-addcand.b | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| sn-addcand.c | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| Ref | Expression |
|---|---|
| sn-addcand | ⊢ (𝜑 → ((𝐴 + 𝐵) = (𝐴 + 𝐶) ↔ 𝐵 = 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sn-addcand.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | sn-negex2 43238 | . . 3 ⊢ (𝐴 ∈ ℂ → ∃𝑥 ∈ ℂ (𝑥 + 𝐴) = 0) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ ℂ (𝑥 + 𝐴) = 0) |
| 4 | oveq2 7427 | . . . 4 ⊢ ((𝐴 + 𝐵) = (𝐴 + 𝐶) → (𝑥 + (𝐴 + 𝐵)) = (𝑥 + (𝐴 + 𝐶))) | |
| 5 | simprr 785 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + 𝐴) = 0) | |
| 6 | 5 | oveq1d 7434 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐵) = (0 + 𝐵)) |
| 7 | simprl 783 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝑥 ∈ ℂ) | |
| 8 | 1 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐴 ∈ ℂ) |
| 9 | sn-addcand.b | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 10 | 9 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐵 ∈ ℂ) |
| 11 | 7, 8, 10 | addassd 11246 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐵) = (𝑥 + (𝐴 + 𝐵))) |
| 12 | sn-addlid 43223 | . . . . . . 7 ⊢ (𝐵 ∈ ℂ → (0 + 𝐵) = 𝐵) | |
| 13 | 10, 12 | syl 18 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (0 + 𝐵) = 𝐵) |
| 14 | 6, 11, 13 | 3eqtr3d 2808 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + (𝐴 + 𝐵)) = 𝐵) |
| 15 | 5 | oveq1d 7434 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐶) = (0 + 𝐶)) |
| 16 | sn-addcand.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 17 | 16 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐶 ∈ ℂ) |
| 18 | 7, 8, 17 | addassd 11246 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐶) = (𝑥 + (𝐴 + 𝐶))) |
| 19 | sn-addlid 43223 | . . . . . . 7 ⊢ (𝐶 ∈ ℂ → (0 + 𝐶) = 𝐶) | |
| 20 | 17, 19 | syl 18 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (0 + 𝐶) = 𝐶) |
| 21 | 15, 18, 20 | 3eqtr3d 2808 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + (𝐴 + 𝐶)) = 𝐶) |
| 22 | 14, 21 | eqeq12d 2781 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + (𝐴 + 𝐵)) = (𝑥 + (𝐴 + 𝐶)) ↔ 𝐵 = 𝐶)) |
| 23 | 4, 22 | imbitrid 247 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝐴 + 𝐵) = (𝐴 + 𝐶) → 𝐵 = 𝐶)) |
| 24 | oveq2 7427 | . . 3 ⊢ (𝐵 = 𝐶 → (𝐴 + 𝐵) = (𝐴 + 𝐶)) | |
| 25 | 23, 24 | impbid1 228 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝐴 + 𝐵) = (𝐴 + 𝐶) ↔ 𝐵 = 𝐶)) |
| 26 | 3, 25 | rexlimddv 3174 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) = (𝐴 + 𝐶) ↔ 𝐵 = 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2146 ∃wrex 3091 (class class class)co 7419 ℂcc 11113 0cc0 11115 + caddc 11118 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-po 5571 df-so 5572 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11260 df-mnf 11261 df-ltxr 11263 df-2 12318 df-3 12319 df-resub 43185 |
| This theorem is used by: sn-addrid 43240 sn-addid0 43244 sn-subeu 43246 zaddcomlem 43295 zaddcom 43296 |
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