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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sn-addcand | Structured version Visualization version GIF version | ||
| Description: addcand 11464 without ax-mulcom 11219. Note how the proof is almost identical to addcan 11445. (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 42448 | . . 3 ⊢ (𝐴 ∈ ℂ → ∃𝑥 ∈ ℂ (𝑥 + 𝐴) = 0) | |
| 3 | 1, 2 | syl 17 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ ℂ (𝑥 + 𝐴) = 0) | 
| 4 | oveq2 7439 | . . . 4 ⊢ ((𝐴 + 𝐵) = (𝐴 + 𝐶) → (𝑥 + (𝐴 + 𝐵)) = (𝑥 + (𝐴 + 𝐶))) | |
| 5 | simprr 773 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + 𝐴) = 0) | |
| 6 | 5 | oveq1d 7446 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐵) = (0 + 𝐵)) | 
| 7 | simprl 771 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝑥 ∈ ℂ) | |
| 8 | 1 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐴 ∈ ℂ) | 
| 9 | sn-addcand.b | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 10 | 9 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐵 ∈ ℂ) | 
| 11 | 7, 8, 10 | addassd 11283 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐵) = (𝑥 + (𝐴 + 𝐵))) | 
| 12 | sn-addlid 42434 | . . . . . . 7 ⊢ (𝐵 ∈ ℂ → (0 + 𝐵) = 𝐵) | |
| 13 | 10, 12 | syl 17 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (0 + 𝐵) = 𝐵) | 
| 14 | 6, 11, 13 | 3eqtr3d 2785 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + (𝐴 + 𝐵)) = 𝐵) | 
| 15 | 5 | oveq1d 7446 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐶) = (0 + 𝐶)) | 
| 16 | sn-addcand.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 17 | 16 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → 𝐶 ∈ ℂ) | 
| 18 | 7, 8, 17 | addassd 11283 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + 𝐴) + 𝐶) = (𝑥 + (𝐴 + 𝐶))) | 
| 19 | sn-addlid 42434 | . . . . . . 7 ⊢ (𝐶 ∈ ℂ → (0 + 𝐶) = 𝐶) | |
| 20 | 17, 19 | syl 17 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (0 + 𝐶) = 𝐶) | 
| 21 | 15, 18, 20 | 3eqtr3d 2785 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → (𝑥 + (𝐴 + 𝐶)) = 𝐶) | 
| 22 | 14, 21 | eqeq12d 2753 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝑥 + (𝐴 + 𝐵)) = (𝑥 + (𝐴 + 𝐶)) ↔ 𝐵 = 𝐶)) | 
| 23 | 4, 22 | imbitrid 244 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝐴 + 𝐵) = (𝐴 + 𝐶) → 𝐵 = 𝐶)) | 
| 24 | oveq2 7439 | . . 3 ⊢ (𝐵 = 𝐶 → (𝐴 + 𝐵) = (𝐴 + 𝐶)) | |
| 25 | 23, 24 | impbid1 225 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ (𝑥 + 𝐴) = 0)) → ((𝐴 + 𝐵) = (𝐴 + 𝐶) ↔ 𝐵 = 𝐶)) | 
| 26 | 3, 25 | rexlimddv 3161 | 1 ⊢ (𝜑 → ((𝐴 + 𝐵) = (𝐴 + 𝐶) ↔ 𝐵 = 𝐶)) | 
| Colors of variables: wff setvar class | 
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 ∃wrex 3070 (class class class)co 7431 ℂcc 11153 0cc0 11155 + caddc 11158 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-br 5144 df-opab 5206 df-mpt 5226 df-id 5578 df-po 5592 df-so 5593 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-er 8745 df-en 8986 df-dom 8987 df-sdom 8988 df-pnf 11297 df-mnf 11298 df-ltxr 11300 df-2 12329 df-3 12330 df-resub 42396 | 
| This theorem is referenced by: sn-addrid 42450 sn-addid0 42454 sn-subeu 42456 zaddcomlem 42481 zaddcom 42482 | 
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