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Theorem dalem44 35505
Description: Lemma for dath 35525. Dummy center of perspectivity 𝑐 lies outside of plane 𝐺𝐻𝐼. (Contributed by NM, 16-Aug-2012.)
Hypotheses
Ref Expression
dalem.ph (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃𝐴𝑄𝐴𝑅𝐴) ∧ (𝑆𝐴𝑇𝐴𝑈𝐴)) ∧ (𝑌𝑂𝑍𝑂) ∧ ((¬ 𝐶 (𝑃 𝑄) ∧ ¬ 𝐶 (𝑄 𝑅) ∧ ¬ 𝐶 (𝑅 𝑃)) ∧ (¬ 𝐶 (𝑆 𝑇) ∧ ¬ 𝐶 (𝑇 𝑈) ∧ ¬ 𝐶 (𝑈 𝑆)) ∧ (𝐶 (𝑃 𝑆) ∧ 𝐶 (𝑄 𝑇) ∧ 𝐶 (𝑅 𝑈)))))
dalem.l = (le‘𝐾)
dalem.j = (join‘𝐾)
dalem.a 𝐴 = (Atoms‘𝐾)
dalem.ps (𝜓 ↔ ((𝑐𝐴𝑑𝐴) ∧ ¬ 𝑐 𝑌 ∧ (𝑑𝑐 ∧ ¬ 𝑑 𝑌𝐶 (𝑐 𝑑))))
dalem44.m = (meet‘𝐾)
dalem44.o 𝑂 = (LPlanes‘𝐾)
dalem44.y 𝑌 = ((𝑃 𝑄) 𝑅)
dalem44.z 𝑍 = ((𝑆 𝑇) 𝑈)
dalem44.g 𝐺 = ((𝑐 𝑃) (𝑑 𝑆))
dalem44.h 𝐻 = ((𝑐 𝑄) (𝑑 𝑇))
dalem44.i 𝐼 = ((𝑐 𝑅) (𝑑 𝑈))
Assertion
Ref Expression
dalem44 ((𝜑𝑌 = 𝑍𝜓) → ¬ 𝑐 ((𝐺 𝐻) 𝐼))

Proof of Theorem dalem44
StepHypRef Expression
1 dalem.ph . . . 4 (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃𝐴𝑄𝐴𝑅𝐴) ∧ (𝑆𝐴𝑇𝐴𝑈𝐴)) ∧ (𝑌𝑂𝑍𝑂) ∧ ((¬ 𝐶 (𝑃 𝑄) ∧ ¬ 𝐶 (𝑄 𝑅) ∧ ¬ 𝐶 (𝑅 𝑃)) ∧ (¬ 𝐶 (𝑆 𝑇) ∧ ¬ 𝐶 (𝑇 𝑈) ∧ ¬ 𝐶 (𝑈 𝑆)) ∧ (𝐶 (𝑃 𝑆) ∧ 𝐶 (𝑄 𝑇) ∧ 𝐶 (𝑅 𝑈)))))
2 dalem.l . . . 4 = (le‘𝐾)
3 dalem.j . . . 4 = (join‘𝐾)
4 dalem.a . . . 4 𝐴 = (Atoms‘𝐾)
5 dalem.ps . . . 4 (𝜓 ↔ ((𝑐𝐴𝑑𝐴) ∧ ¬ 𝑐 𝑌 ∧ (𝑑𝑐 ∧ ¬ 𝑑 𝑌𝐶 (𝑐 𝑑))))
6 dalem44.m . . . 4 = (meet‘𝐾)
7 dalem44.o . . . 4 𝑂 = (LPlanes‘𝐾)
8 dalem44.y . . . 4 𝑌 = ((𝑃 𝑄) 𝑅)
9 dalem44.z . . . 4 𝑍 = ((𝑆 𝑇) 𝑈)
10 dalem44.g . . . 4 𝐺 = ((𝑐 𝑃) (𝑑 𝑆))
11 dalem44.h . . . 4 𝐻 = ((𝑐 𝑄) (𝑑 𝑇))
12 dalem44.i . . . 4 𝐼 = ((𝑐 𝑅) (𝑑 𝑈))
131, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12dalem43 35504 . . 3 ((𝜑𝑌 = 𝑍𝜓) → ((𝐺 𝐻) 𝐼) ≠ 𝑌)
1413necomd 2987 . 2 ((𝜑𝑌 = 𝑍𝜓) → 𝑌 ≠ ((𝐺 𝐻) 𝐼))
151dalemkelat 35413 . . . . . . 7 (𝜑𝐾 ∈ Lat)
16153ad2ant1 1128 . . . . . 6 ((𝜑𝑌 = 𝑍𝜓) → 𝐾 ∈ Lat)
175, 4dalemcceb 35478 . . . . . . 7 (𝜓𝑐 ∈ (Base‘𝐾))
18173ad2ant3 1130 . . . . . 6 ((𝜑𝑌 = 𝑍𝜓) → 𝑐 ∈ (Base‘𝐾))
191, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12dalem42 35503 . . . . . . 7 ((𝜑𝑌 = 𝑍𝜓) → ((𝐺 𝐻) 𝐼) ∈ 𝑂)
20 eqid 2760 . . . . . . . 8 (Base‘𝐾) = (Base‘𝐾)
2120, 7lplnbase 35323 . . . . . . 7 (((𝐺 𝐻) 𝐼) ∈ 𝑂 → ((𝐺 𝐻) 𝐼) ∈ (Base‘𝐾))
2219, 21syl 17 . . . . . 6 ((𝜑𝑌 = 𝑍𝜓) → ((𝐺 𝐻) 𝐼) ∈ (Base‘𝐾))
2320, 2, 3latleeqj1 17264 . . . . . 6 ((𝐾 ∈ Lat ∧ 𝑐 ∈ (Base‘𝐾) ∧ ((𝐺 𝐻) 𝐼) ∈ (Base‘𝐾)) → (𝑐 ((𝐺 𝐻) 𝐼) ↔ (𝑐 ((𝐺 𝐻) 𝐼)) = ((𝐺 𝐻) 𝐼)))
2416, 18, 22, 23syl3anc 1477 . . . . 5 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 ((𝐺 𝐻) 𝐼) ↔ (𝑐 ((𝐺 𝐻) 𝐼)) = ((𝐺 𝐻) 𝐼)))
251, 2, 3, 4, 5, 6, 7, 8, 9, 10dalem28 35489 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → 𝑃 (𝐺 𝑐))
261dalemkehl 35412 . . . . . . . . . . . . . 14 (𝜑𝐾 ∈ HL)
27263ad2ant1 1128 . . . . . . . . . . . . 13 ((𝜑𝑌 = 𝑍𝜓) → 𝐾 ∈ HL)
285dalemccea 35472 . . . . . . . . . . . . . 14 (𝜓𝑐𝐴)
29283ad2ant3 1130 . . . . . . . . . . . . 13 ((𝜑𝑌 = 𝑍𝜓) → 𝑐𝐴)
301, 2, 3, 4, 5, 6, 7, 8, 9, 10dalem23 35485 . . . . . . . . . . . . 13 ((𝜑𝑌 = 𝑍𝜓) → 𝐺𝐴)
313, 4hlatjcom 35157 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐺𝐴) → (𝑐 𝐺) = (𝐺 𝑐))
3227, 29, 30, 31syl3anc 1477 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐺) = (𝐺 𝑐))
3325, 32breqtrrd 4832 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → 𝑃 (𝑐 𝐺))
341, 2, 3, 4, 5, 6, 7, 8, 9, 11dalem33 35494 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → 𝑄 (𝐻 𝑐))
351, 2, 3, 4, 5, 6, 7, 8, 9, 11dalem29 35490 . . . . . . . . . . . . 13 ((𝜑𝑌 = 𝑍𝜓) → 𝐻𝐴)
363, 4hlatjcom 35157 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐻𝐴) → (𝑐 𝐻) = (𝐻 𝑐))
3727, 29, 35, 36syl3anc 1477 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐻) = (𝐻 𝑐))
3834, 37breqtrrd 4832 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → 𝑄 (𝑐 𝐻))
391, 4dalempeb 35428 . . . . . . . . . . . . 13 (𝜑𝑃 ∈ (Base‘𝐾))
40393ad2ant1 1128 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → 𝑃 ∈ (Base‘𝐾))
4120, 3, 4hlatjcl 35156 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐺𝐴) → (𝑐 𝐺) ∈ (Base‘𝐾))
4227, 29, 30, 41syl3anc 1477 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐺) ∈ (Base‘𝐾))
431, 4dalemqeb 35429 . . . . . . . . . . . . 13 (𝜑𝑄 ∈ (Base‘𝐾))
44433ad2ant1 1128 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → 𝑄 ∈ (Base‘𝐾))
4520, 3, 4hlatjcl 35156 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐻𝐴) → (𝑐 𝐻) ∈ (Base‘𝐾))
4627, 29, 35, 45syl3anc 1477 . . . . . . . . . . . 12 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐻) ∈ (Base‘𝐾))
4720, 2, 3latjlej12 17268 . . . . . . . . . . . 12 ((𝐾 ∈ Lat ∧ (𝑃 ∈ (Base‘𝐾) ∧ (𝑐 𝐺) ∈ (Base‘𝐾)) ∧ (𝑄 ∈ (Base‘𝐾) ∧ (𝑐 𝐻) ∈ (Base‘𝐾))) → ((𝑃 (𝑐 𝐺) ∧ 𝑄 (𝑐 𝐻)) → (𝑃 𝑄) ((𝑐 𝐺) (𝑐 𝐻))))
4816, 40, 42, 44, 46, 47syl122anc 1486 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → ((𝑃 (𝑐 𝐺) ∧ 𝑄 (𝑐 𝐻)) → (𝑃 𝑄) ((𝑐 𝐺) (𝑐 𝐻))))
4933, 38, 48mp2and 717 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑃 𝑄) ((𝑐 𝐺) (𝑐 𝐻)))
5020, 4atbase 35079 . . . . . . . . . . . 12 (𝐺𝐴𝐺 ∈ (Base‘𝐾))
5130, 50syl 17 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → 𝐺 ∈ (Base‘𝐾))
5220, 4atbase 35079 . . . . . . . . . . . 12 (𝐻𝐴𝐻 ∈ (Base‘𝐾))
5335, 52syl 17 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → 𝐻 ∈ (Base‘𝐾))
5420, 3latjjdi 17304 . . . . . . . . . . 11 ((𝐾 ∈ Lat ∧ (𝑐 ∈ (Base‘𝐾) ∧ 𝐺 ∈ (Base‘𝐾) ∧ 𝐻 ∈ (Base‘𝐾))) → (𝑐 (𝐺 𝐻)) = ((𝑐 𝐺) (𝑐 𝐻)))
5516, 18, 51, 53, 54syl13anc 1479 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 (𝐺 𝐻)) = ((𝑐 𝐺) (𝑐 𝐻)))
5649, 55breqtrrd 4832 . . . . . . . . 9 ((𝜑𝑌 = 𝑍𝜓) → (𝑃 𝑄) (𝑐 (𝐺 𝐻)))
571, 2, 3, 4, 5, 6, 7, 8, 9, 12dalem37 35498 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → 𝑅 (𝐼 𝑐))
581, 2, 3, 4, 5, 6, 7, 8, 9, 12dalem34 35495 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → 𝐼𝐴)
593, 4hlatjcom 35157 . . . . . . . . . . 11 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐼𝐴) → (𝑐 𝐼) = (𝐼 𝑐))
6027, 29, 58, 59syl3anc 1477 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐼) = (𝐼 𝑐))
6157, 60breqtrrd 4832 . . . . . . . . 9 ((𝜑𝑌 = 𝑍𝜓) → 𝑅 (𝑐 𝐼))
621, 3, 4dalempjqeb 35434 . . . . . . . . . . 11 (𝜑 → (𝑃 𝑄) ∈ (Base‘𝐾))
63623ad2ant1 1128 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑃 𝑄) ∈ (Base‘𝐾))
6420, 3, 4hlatjcl 35156 . . . . . . . . . . . 12 ((𝐾 ∈ HL ∧ 𝐺𝐴𝐻𝐴) → (𝐺 𝐻) ∈ (Base‘𝐾))
6527, 30, 35, 64syl3anc 1477 . . . . . . . . . . 11 ((𝜑𝑌 = 𝑍𝜓) → (𝐺 𝐻) ∈ (Base‘𝐾))
6620, 3latjcl 17252 . . . . . . . . . . 11 ((𝐾 ∈ Lat ∧ 𝑐 ∈ (Base‘𝐾) ∧ (𝐺 𝐻) ∈ (Base‘𝐾)) → (𝑐 (𝐺 𝐻)) ∈ (Base‘𝐾))
6716, 18, 65, 66syl3anc 1477 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 (𝐺 𝐻)) ∈ (Base‘𝐾))
681, 4dalemreb 35430 . . . . . . . . . . 11 (𝜑𝑅 ∈ (Base‘𝐾))
69683ad2ant1 1128 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → 𝑅 ∈ (Base‘𝐾))
7020, 3, 4hlatjcl 35156 . . . . . . . . . . 11 ((𝐾 ∈ HL ∧ 𝑐𝐴𝐼𝐴) → (𝑐 𝐼) ∈ (Base‘𝐾))
7127, 29, 58, 70syl3anc 1477 . . . . . . . . . 10 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 𝐼) ∈ (Base‘𝐾))
7220, 2, 3latjlej12 17268 . . . . . . . . . 10 ((𝐾 ∈ Lat ∧ ((𝑃 𝑄) ∈ (Base‘𝐾) ∧ (𝑐 (𝐺 𝐻)) ∈ (Base‘𝐾)) ∧ (𝑅 ∈ (Base‘𝐾) ∧ (𝑐 𝐼) ∈ (Base‘𝐾))) → (((𝑃 𝑄) (𝑐 (𝐺 𝐻)) ∧ 𝑅 (𝑐 𝐼)) → ((𝑃 𝑄) 𝑅) ((𝑐 (𝐺 𝐻)) (𝑐 𝐼))))
7316, 63, 67, 69, 71, 72syl122anc 1486 . . . . . . . . 9 ((𝜑𝑌 = 𝑍𝜓) → (((𝑃 𝑄) (𝑐 (𝐺 𝐻)) ∧ 𝑅 (𝑐 𝐼)) → ((𝑃 𝑄) 𝑅) ((𝑐 (𝐺 𝐻)) (𝑐 𝐼))))
7456, 61, 73mp2and 717 . . . . . . . 8 ((𝜑𝑌 = 𝑍𝜓) → ((𝑃 𝑄) 𝑅) ((𝑐 (𝐺 𝐻)) (𝑐 𝐼)))
7520, 4atbase 35079 . . . . . . . . . 10 (𝐼𝐴𝐼 ∈ (Base‘𝐾))
7658, 75syl 17 . . . . . . . . 9 ((𝜑𝑌 = 𝑍𝜓) → 𝐼 ∈ (Base‘𝐾))
7720, 3latjjdi 17304 . . . . . . . . 9 ((𝐾 ∈ Lat ∧ (𝑐 ∈ (Base‘𝐾) ∧ (𝐺 𝐻) ∈ (Base‘𝐾) ∧ 𝐼 ∈ (Base‘𝐾))) → (𝑐 ((𝐺 𝐻) 𝐼)) = ((𝑐 (𝐺 𝐻)) (𝑐 𝐼)))
7816, 18, 65, 76, 77syl13anc 1479 . . . . . . . 8 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 ((𝐺 𝐻) 𝐼)) = ((𝑐 (𝐺 𝐻)) (𝑐 𝐼)))
7974, 78breqtrrd 4832 . . . . . . 7 ((𝜑𝑌 = 𝑍𝜓) → ((𝑃 𝑄) 𝑅) (𝑐 ((𝐺 𝐻) 𝐼)))
808, 79syl5eqbr 4839 . . . . . 6 ((𝜑𝑌 = 𝑍𝜓) → 𝑌 (𝑐 ((𝐺 𝐻) 𝐼)))
81 breq2 4808 . . . . . 6 ((𝑐 ((𝐺 𝐻) 𝐼)) = ((𝐺 𝐻) 𝐼) → (𝑌 (𝑐 ((𝐺 𝐻) 𝐼)) ↔ 𝑌 ((𝐺 𝐻) 𝐼)))
8280, 81syl5ibcom 235 . . . . 5 ((𝜑𝑌 = 𝑍𝜓) → ((𝑐 ((𝐺 𝐻) 𝐼)) = ((𝐺 𝐻) 𝐼) → 𝑌 ((𝐺 𝐻) 𝐼)))
8324, 82sylbid 230 . . . 4 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 ((𝐺 𝐻) 𝐼) → 𝑌 ((𝐺 𝐻) 𝐼)))
841dalemyeo 35421 . . . . . 6 (𝜑𝑌𝑂)
85843ad2ant1 1128 . . . . 5 ((𝜑𝑌 = 𝑍𝜓) → 𝑌𝑂)
862, 7lplncmp 35351 . . . . 5 ((𝐾 ∈ HL ∧ 𝑌𝑂 ∧ ((𝐺 𝐻) 𝐼) ∈ 𝑂) → (𝑌 ((𝐺 𝐻) 𝐼) ↔ 𝑌 = ((𝐺 𝐻) 𝐼)))
8727, 85, 19, 86syl3anc 1477 . . . 4 ((𝜑𝑌 = 𝑍𝜓) → (𝑌 ((𝐺 𝐻) 𝐼) ↔ 𝑌 = ((𝐺 𝐻) 𝐼)))
8883, 87sylibd 229 . . 3 ((𝜑𝑌 = 𝑍𝜓) → (𝑐 ((𝐺 𝐻) 𝐼) → 𝑌 = ((𝐺 𝐻) 𝐼)))
8988necon3ad 2945 . 2 ((𝜑𝑌 = 𝑍𝜓) → (𝑌 ≠ ((𝐺 𝐻) 𝐼) → ¬ 𝑐 ((𝐺 𝐻) 𝐼)))
9014, 89mpd 15 1 ((𝜑𝑌 = 𝑍𝜓) → ¬ 𝑐 ((𝐺 𝐻) 𝐼))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383  w3a 1072   = wceq 1632  wcel 2139  wne 2932   class class class wbr 4804  cfv 6049  (class class class)co 6813  Basecbs 16059  lecple 16150  joincjn 17145  meetcmee 17146  Latclat 17246  Atomscatm 35053  HLchlt 35140  LPlanesclpl 35281
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-rep 4923  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-reu 3057  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-op 4328  df-uni 4589  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-id 5174  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-riota 6774  df-ov 6816  df-oprab 6817  df-preset 17129  df-poset 17147  df-plt 17159  df-lub 17175  df-glb 17176  df-join 17177  df-meet 17178  df-p0 17240  df-lat 17247  df-clat 17309  df-oposet 34966  df-ol 34968  df-oml 34969  df-covers 35056  df-ats 35057  df-atl 35088  df-cvlat 35112  df-hlat 35141  df-llines 35287  df-lplanes 35288  df-lvols 35289
This theorem is referenced by:  dalem45  35506
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