| Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > constrrtlc2 | Structured version Visualization version GIF version | ||
| Description: In the construction of constructible numbers, line-circle intersections are one of the original points, in a degenerate case. (Contributed by Thierry Arnoux, 6-Jul-2025.) |
| Ref | Expression |
|---|---|
| constrrtlc.s | ⊢ (𝜑 → 𝑆 ⊆ ℂ) |
| constrrtlc.a | ⊢ (𝜑 → 𝐴 ∈ 𝑆) |
| constrrtlc.b | ⊢ (𝜑 → 𝐵 ∈ 𝑆) |
| constrrtlc.c | ⊢ (𝜑 → 𝐶 ∈ 𝑆) |
| constrrtlc.e | ⊢ (𝜑 → 𝐸 ∈ 𝑆) |
| constrrtlc.f | ⊢ (𝜑 → 𝐹 ∈ 𝑆) |
| constrrtlc.t | ⊢ (𝜑 → 𝑇 ∈ ℝ) |
| constrrtlc.1 | ⊢ (𝜑 → 𝑋 = (𝐴 + (𝑇 · (𝐵 − 𝐴)))) |
| constrrtlc.2 | ⊢ (𝜑 → (abs‘(𝑋 − 𝐶)) = (abs‘(𝐸 − 𝐹))) |
| constrrtlc2.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| constrrtlc2 | ⊢ (𝜑 → 𝑋 = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | constrrtlc.1 | . 2 ⊢ (𝜑 → 𝑋 = (𝐴 + (𝑇 · (𝐵 − 𝐴)))) | |
| 2 | constrrtlc.s | . . . . . . 7 ⊢ (𝜑 → 𝑆 ⊆ ℂ) | |
| 3 | constrrtlc.b | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ 𝑆) | |
| 4 | 2, 3 | sseldd 3916 | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| 5 | constrrtlc2.1 | . . . . . . 7 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 6 | 5 | eqcomd 2745 | . . . . . 6 ⊢ (𝜑 → 𝐵 = 𝐴) |
| 7 | 4, 6 | subeq0bd 11568 | . . . . 5 ⊢ (𝜑 → (𝐵 − 𝐴) = 0) |
| 8 | 7 | oveq2d 7373 | . . . 4 ⊢ (𝜑 → (𝑇 · (𝐵 − 𝐴)) = (𝑇 · 0)) |
| 9 | constrrtlc.t | . . . . . 6 ⊢ (𝜑 → 𝑇 ∈ ℝ) | |
| 10 | 9 | recnd 11165 | . . . . 5 ⊢ (𝜑 → 𝑇 ∈ ℂ) |
| 11 | 10 | mul01d 11337 | . . . 4 ⊢ (𝜑 → (𝑇 · 0) = 0) |
| 12 | 8, 11 | eqtrd 2774 | . . 3 ⊢ (𝜑 → (𝑇 · (𝐵 − 𝐴)) = 0) |
| 13 | 12 | oveq2d 7373 | . 2 ⊢ (𝜑 → (𝐴 + (𝑇 · (𝐵 − 𝐴))) = (𝐴 + 0)) |
| 14 | constrrtlc.a | . . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑆) | |
| 15 | 2, 14 | sseldd 3916 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| 16 | 15 | addridd 11338 | . 2 ⊢ (𝜑 → (𝐴 + 0) = 𝐴) |
| 17 | 1, 13, 16 | 3eqtrd 2778 | 1 ⊢ (𝜑 → 𝑋 = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ⊆ wss 3883 ‘cfv 6486 (class class class)co 7357 ℂcc 11028 ℝcr 11029 0cc0 11030 + caddc 11033 · cmul 11035 − cmin 11369 abscabs 15188 |
| 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: constrfin 33939 constrelextdg2 33940 |
| Copyright terms: Public domain | W3C validator |