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| Mirrors > Home > MPE Home > Th. List > Mathboxes > constrllcl | Structured version Visualization version GIF version | ||
| Description: Constructible numbers are closed under line-line intersections. (Contributed by Thierry Arnoux, 2-Nov-2025.) |
| Ref | Expression |
|---|---|
| constrllcl.a | ⊢ (𝜑 → 𝐴 ∈ Constr) |
| constrllcl.b | ⊢ (𝜑 → 𝐵 ∈ Constr) |
| constrllcl.c | ⊢ (𝜑 → 𝐺 ∈ Constr) |
| constrllcl.e | ⊢ (𝜑 → 𝐷 ∈ Constr) |
| constrllcl.t | ⊢ (𝜑 → 𝑇 ∈ ℝ) |
| constrllcl.r | ⊢ (𝜑 → 𝑅 ∈ ℝ) |
| constrllcl.x | ⊢ (𝜑 → 𝑋 ∈ ℂ) |
| constrllcl.1 | ⊢ (𝜑 → 𝑋 = (𝐴 + (𝑇 · (𝐵 − 𝐴)))) |
| constrllcl.2 | ⊢ (𝜑 → 𝑋 = (𝐺 + (𝑅 · (𝐷 − 𝐺)))) |
| constrllcl.3 | ⊢ (𝜑 → (ℑ‘((∗‘(𝐵 − 𝐴)) · (𝐷 − 𝐺))) ≠ 0) |
| Ref | Expression |
|---|---|
| constrllcl | ⊢ (𝜑 → 𝑋 ∈ Constr) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | constrcbvlem 34387 | . 2 ⊢ rec((𝑧 ∈ V ↦ {𝑦 ∈ ℂ ∣ (∃𝑖 ∈ 𝑧 ∃𝑗 ∈ 𝑧 ∃𝑘 ∈ 𝑧 ∃𝑙 ∈ 𝑧 ∃𝑜 ∈ ℝ ∃𝑝 ∈ ℝ (𝑦 = (𝑖 + (𝑜 · (𝑗 − 𝑖))) ∧ 𝑦 = (𝑘 + (𝑝 · (𝑙 − 𝑘))) ∧ (ℑ‘((∗‘(𝑗 − 𝑖)) · (𝑙 − 𝑘))) ≠ 0) ∨ ∃𝑖 ∈ 𝑧 ∃𝑗 ∈ 𝑧 ∃𝑘 ∈ 𝑧 ∃𝑚 ∈ 𝑧 ∃𝑞 ∈ 𝑧 ∃𝑜 ∈ ℝ (𝑦 = (𝑖 + (𝑜 · (𝑗 − 𝑖))) ∧ (abs‘(𝑦 − 𝑘)) = (abs‘(𝑚 − 𝑞))) ∨ ∃𝑖 ∈ 𝑧 ∃𝑗 ∈ 𝑧 ∃𝑘 ∈ 𝑧 ∃𝑙 ∈ 𝑧 ∃𝑚 ∈ 𝑧 ∃𝑞 ∈ 𝑧 (𝑖 ≠ 𝑙 ∧ (abs‘(𝑦 − 𝑖)) = (abs‘(𝑗 − 𝑘)) ∧ (abs‘(𝑦 − 𝑙)) = (abs‘(𝑚 − 𝑞))))}), {0, 1}) = rec((𝑠 ∈ V ↦ {𝑥 ∈ ℂ ∣ (∃𝑎 ∈ 𝑠 ∃𝑏 ∈ 𝑠 ∃𝑐 ∈ 𝑠 ∃𝑑 ∈ 𝑠 ∃𝑡 ∈ ℝ ∃𝑟 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏 − 𝑎))) ∧ 𝑥 = (𝑐 + (𝑟 · (𝑑 − 𝑐))) ∧ (ℑ‘((∗‘(𝑏 − 𝑎)) · (𝑑 − 𝑐))) ≠ 0) ∨ ∃𝑎 ∈ 𝑠 ∃𝑏 ∈ 𝑠 ∃𝑐 ∈ 𝑠 ∃𝑒 ∈ 𝑠 ∃𝑓 ∈ 𝑠 ∃𝑡 ∈ ℝ (𝑥 = (𝑎 + (𝑡 · (𝑏 − 𝑎))) ∧ (abs‘(𝑥 − 𝑐)) = (abs‘(𝑒 − 𝑓))) ∨ ∃𝑎 ∈ 𝑠 ∃𝑏 ∈ 𝑠 ∃𝑐 ∈ 𝑠 ∃𝑑 ∈ 𝑠 ∃𝑒 ∈ 𝑠 ∃𝑓 ∈ 𝑠 (𝑎 ≠ 𝑑 ∧ (abs‘(𝑥 − 𝑎)) = (abs‘(𝑏 − 𝑐)) ∧ (abs‘(𝑥 − 𝑑)) = (abs‘(𝑒 − 𝑓))))}), {0, 1}) | |
| 2 | constrllcl.a | . 2 ⊢ (𝜑 → 𝐴 ∈ Constr) | |
| 3 | constrllcl.b | . 2 ⊢ (𝜑 → 𝐵 ∈ Constr) | |
| 4 | constrllcl.c | . 2 ⊢ (𝜑 → 𝐺 ∈ Constr) | |
| 5 | constrllcl.e | . 2 ⊢ (𝜑 → 𝐷 ∈ Constr) | |
| 6 | constrllcl.t | . 2 ⊢ (𝜑 → 𝑇 ∈ ℝ) | |
| 7 | constrllcl.r | . 2 ⊢ (𝜑 → 𝑅 ∈ ℝ) | |
| 8 | constrllcl.x | . 2 ⊢ (𝜑 → 𝑋 ∈ ℂ) | |
| 9 | constrllcl.1 | . 2 ⊢ (𝜑 → 𝑋 = (𝐴 + (𝑇 · (𝐵 − 𝐴)))) | |
| 10 | constrllcl.2 | . 2 ⊢ (𝜑 → 𝑋 = (𝐺 + (𝑅 · (𝐷 − 𝐺)))) | |
| 11 | constrllcl.3 | . 2 ⊢ (𝜑 → (ℑ‘((∗‘(𝐵 − 𝐴)) · (𝐷 − 𝐺))) ≠ 0) | |
| 12 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 | constrllcllem 34384 | 1 ⊢ (𝜑 → 𝑋 ∈ Constr) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∨ w3o 1102 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 ∃wrex 3086 {crab 3412 Vcvv 3450 {cpr 4585 ↦ cmpt 5185 ‘cfv 6538 (class class class)co 7420 reccrdg 8417 ℂcc 11198 ℝcr 11199 0cc0 11200 1c1 11201 + caddc 11203 · cmul 11205 − cmin 11541 ∗ccj 15263 ℑcim 15265 abscabs 15401 Constrcconstr 34361 |
| 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-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 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-pss 4014 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-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 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-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 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-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-2o 8477 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-pnf 11345 df-mnf 11346 df-ltxr 11348 df-sub 11543 df-constr 34362 |
| This theorem is used by: constrremulcl 34399 constrrecl 34401 constrreinvcl 34404 |
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