Users' Mathboxes Mathbox for Norm Megill < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  cdleme1 Structured version   Visualization version   GIF version

Theorem cdleme1 40210
Description: Part of proof of Lemma E in [Crawley] p. 113. 𝐹 represents their f(r). Here we show r f(r) = r u (7th through 5th lines from bottom on p. 113). (Contributed by NM, 4-Jun-2012.)
Hypotheses
Ref Expression
cdleme1.l = (le‘𝐾)
cdleme1.j = (join‘𝐾)
cdleme1.m = (meet‘𝐾)
cdleme1.a 𝐴 = (Atoms‘𝐾)
cdleme1.h 𝐻 = (LHyp‘𝐾)
cdleme1.u 𝑈 = ((𝑃 𝑄) 𝑊)
cdleme1.f 𝐹 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
Assertion
Ref Expression
cdleme1 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝐹) = (𝑅 𝑈))

Proof of Theorem cdleme1
StepHypRef Expression
1 cdleme1.f . . 3 𝐹 = ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))
21oveq2i 7442 . 2 (𝑅 𝐹) = (𝑅 ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊))))
3 simpll 767 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝐾 ∈ HL)
4 simpr3l 1233 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑅𝐴)
5 hllat 39345 . . . . . 6 (𝐾 ∈ HL → 𝐾 ∈ Lat)
65ad2antrr 726 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝐾 ∈ Lat)
7 eqid 2735 . . . . . . 7 (Base‘𝐾) = (Base‘𝐾)
8 cdleme1.a . . . . . . 7 𝐴 = (Atoms‘𝐾)
97, 8atbase 39271 . . . . . 6 (𝑅𝐴𝑅 ∈ (Base‘𝐾))
104, 9syl 17 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑅 ∈ (Base‘𝐾))
11 cdleme1.u . . . . . 6 𝑈 = ((𝑃 𝑄) 𝑊)
12 simpr1 1193 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑃𝐴)
137, 8atbase 39271 . . . . . . . . 9 (𝑃𝐴𝑃 ∈ (Base‘𝐾))
1412, 13syl 17 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑃 ∈ (Base‘𝐾))
15 simpr2 1194 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑄𝐴)
167, 8atbase 39271 . . . . . . . . 9 (𝑄𝐴𝑄 ∈ (Base‘𝐾))
1715, 16syl 17 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑄 ∈ (Base‘𝐾))
18 cdleme1.j . . . . . . . . 9 = (join‘𝐾)
197, 18latjcl 18497 . . . . . . . 8 ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑄 ∈ (Base‘𝐾)) → (𝑃 𝑄) ∈ (Base‘𝐾))
206, 14, 17, 19syl3anc 1370 . . . . . . 7 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑃 𝑄) ∈ (Base‘𝐾))
21 cdleme1.h . . . . . . . . 9 𝐻 = (LHyp‘𝐾)
227, 21lhpbase 39981 . . . . . . . 8 (𝑊𝐻𝑊 ∈ (Base‘𝐾))
2322ad2antlr 727 . . . . . . 7 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑊 ∈ (Base‘𝐾))
24 cdleme1.m . . . . . . . 8 = (meet‘𝐾)
257, 24latmcl 18498 . . . . . . 7 ((𝐾 ∈ Lat ∧ (𝑃 𝑄) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 𝑄) 𝑊) ∈ (Base‘𝐾))
266, 20, 23, 25syl3anc 1370 . . . . . 6 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑃 𝑄) 𝑊) ∈ (Base‘𝐾))
2711, 26eqeltrid 2843 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑈 ∈ (Base‘𝐾))
287, 18latjcl 18497 . . . . 5 ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ 𝑈 ∈ (Base‘𝐾)) → (𝑅 𝑈) ∈ (Base‘𝐾))
296, 10, 27, 28syl3anc 1370 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝑈) ∈ (Base‘𝐾))
307, 18latjcl 18497 . . . . . . 7 ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾)) → (𝑃 𝑅) ∈ (Base‘𝐾))
316, 14, 10, 30syl3anc 1370 . . . . . 6 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑃 𝑅) ∈ (Base‘𝐾))
327, 24latmcl 18498 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑃 𝑅) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) → ((𝑃 𝑅) 𝑊) ∈ (Base‘𝐾))
336, 31, 23, 32syl3anc 1370 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑃 𝑅) 𝑊) ∈ (Base‘𝐾))
347, 18latjcl 18497 . . . . 5 ((𝐾 ∈ Lat ∧ 𝑄 ∈ (Base‘𝐾) ∧ ((𝑃 𝑅) 𝑊) ∈ (Base‘𝐾)) → (𝑄 ((𝑃 𝑅) 𝑊)) ∈ (Base‘𝐾))
356, 17, 33, 34syl3anc 1370 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑄 ((𝑃 𝑅) 𝑊)) ∈ (Base‘𝐾))
36 cdleme1.l . . . . . 6 = (le‘𝐾)
377, 36, 18latlej1 18506 . . . . 5 ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ 𝑈 ∈ (Base‘𝐾)) → 𝑅 (𝑅 𝑈))
386, 10, 27, 37syl3anc 1370 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑅 (𝑅 𝑈))
397, 36, 18, 24, 8atmod3i1 39847 . . . 4 ((𝐾 ∈ HL ∧ (𝑅𝐴 ∧ (𝑅 𝑈) ∈ (Base‘𝐾) ∧ (𝑄 ((𝑃 𝑅) 𝑊)) ∈ (Base‘𝐾)) ∧ 𝑅 (𝑅 𝑈)) → (𝑅 ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))) = ((𝑅 𝑈) (𝑅 (𝑄 ((𝑃 𝑅) 𝑊)))))
403, 4, 29, 35, 38, 39syl131anc 1382 . . 3 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))) = ((𝑅 𝑈) (𝑅 (𝑄 ((𝑃 𝑅) 𝑊)))))
417, 36, 18latlej2 18507 . . . . . . . . 9 ((𝐾 ∈ Lat ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾)) → 𝑅 (𝑃 𝑅))
426, 14, 10, 41syl3anc 1370 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑅 (𝑃 𝑅))
437, 36, 18, 24, 8atmod3i1 39847 . . . . . . . 8 ((𝐾 ∈ HL ∧ (𝑅𝐴 ∧ (𝑃 𝑅) ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾)) ∧ 𝑅 (𝑃 𝑅)) → (𝑅 ((𝑃 𝑅) 𝑊)) = ((𝑃 𝑅) (𝑅 𝑊)))
443, 4, 31, 23, 42, 43syl131anc 1382 . . . . . . 7 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 ((𝑃 𝑅) 𝑊)) = ((𝑃 𝑅) (𝑅 𝑊)))
45 eqid 2735 . . . . . . . . . 10 (1.‘𝐾) = (1.‘𝐾)
4636, 18, 45, 8, 21lhpjat2 40004 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊)) → (𝑅 𝑊) = (1.‘𝐾))
47463ad2antr3 1189 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝑊) = (1.‘𝐾))
4847oveq2d 7447 . . . . . . 7 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑃 𝑅) (𝑅 𝑊)) = ((𝑃 𝑅) (1.‘𝐾)))
49 hlol 39343 . . . . . . . . 9 (𝐾 ∈ HL → 𝐾 ∈ OL)
5049ad2antrr 726 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝐾 ∈ OL)
517, 24, 45olm11 39209 . . . . . . . 8 ((𝐾 ∈ OL ∧ (𝑃 𝑅) ∈ (Base‘𝐾)) → ((𝑃 𝑅) (1.‘𝐾)) = (𝑃 𝑅))
5250, 31, 51syl2anc 584 . . . . . . 7 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑃 𝑅) (1.‘𝐾)) = (𝑃 𝑅))
5344, 48, 523eqtrd 2779 . . . . . 6 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 ((𝑃 𝑅) 𝑊)) = (𝑃 𝑅))
5453oveq2d 7447 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑄 (𝑅 ((𝑃 𝑅) 𝑊))) = (𝑄 (𝑃 𝑅)))
557, 18latj12 18542 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑄 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾) ∧ ((𝑃 𝑅) 𝑊) ∈ (Base‘𝐾))) → (𝑄 (𝑅 ((𝑃 𝑅) 𝑊))) = (𝑅 (𝑄 ((𝑃 𝑅) 𝑊))))
566, 17, 10, 33, 55syl13anc 1371 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑄 (𝑅 ((𝑃 𝑅) 𝑊))) = (𝑅 (𝑄 ((𝑃 𝑅) 𝑊))))
577, 18latj13 18544 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑄 ∈ (Base‘𝐾) ∧ 𝑃 ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾))) → (𝑄 (𝑃 𝑅)) = (𝑅 (𝑃 𝑄)))
586, 17, 14, 10, 57syl13anc 1371 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑄 (𝑃 𝑅)) = (𝑅 (𝑃 𝑄)))
5954, 56, 583eqtr3rd 2784 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 (𝑃 𝑄)) = (𝑅 (𝑄 ((𝑃 𝑅) 𝑊))))
6059oveq2d 7447 . . 3 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑅 𝑈) (𝑅 (𝑃 𝑄))) = ((𝑅 𝑈) (𝑅 (𝑄 ((𝑃 𝑅) 𝑊)))))
6136, 18, 24, 8, 21, 11cdlemeulpq 40203 . . . . . 6 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴)) → 𝑈 (𝑃 𝑄))
62613adantr3 1170 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → 𝑈 (𝑃 𝑄))
637, 36, 18latjlej2 18512 . . . . . 6 ((𝐾 ∈ Lat ∧ (𝑈 ∈ (Base‘𝐾) ∧ (𝑃 𝑄) ∈ (Base‘𝐾) ∧ 𝑅 ∈ (Base‘𝐾))) → (𝑈 (𝑃 𝑄) → (𝑅 𝑈) (𝑅 (𝑃 𝑄))))
646, 27, 20, 10, 63syl13anc 1371 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑈 (𝑃 𝑄) → (𝑅 𝑈) (𝑅 (𝑃 𝑄))))
6562, 64mpd 15 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝑈) (𝑅 (𝑃 𝑄)))
667, 18latjcl 18497 . . . . . 6 ((𝐾 ∈ Lat ∧ 𝑅 ∈ (Base‘𝐾) ∧ (𝑃 𝑄) ∈ (Base‘𝐾)) → (𝑅 (𝑃 𝑄)) ∈ (Base‘𝐾))
676, 10, 20, 66syl3anc 1370 . . . . 5 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 (𝑃 𝑄)) ∈ (Base‘𝐾))
687, 36, 24latleeqm1 18525 . . . . 5 ((𝐾 ∈ Lat ∧ (𝑅 𝑈) ∈ (Base‘𝐾) ∧ (𝑅 (𝑃 𝑄)) ∈ (Base‘𝐾)) → ((𝑅 𝑈) (𝑅 (𝑃 𝑄)) ↔ ((𝑅 𝑈) (𝑅 (𝑃 𝑄))) = (𝑅 𝑈)))
696, 29, 67, 68syl3anc 1370 . . . 4 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑅 𝑈) (𝑅 (𝑃 𝑄)) ↔ ((𝑅 𝑈) (𝑅 (𝑃 𝑄))) = (𝑅 𝑈)))
7065, 69mpbid 232 . . 3 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → ((𝑅 𝑈) (𝑅 (𝑃 𝑄))) = (𝑅 𝑈))
7140, 60, 703eqtr2rd 2782 . 2 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝑈) = (𝑅 ((𝑅 𝑈) (𝑄 ((𝑃 𝑅) 𝑊)))))
722, 71eqtr4id 2794 1 (((𝐾 ∈ HL ∧ 𝑊𝐻) ∧ (𝑃𝐴𝑄𝐴 ∧ (𝑅𝐴 ∧ ¬ 𝑅 𝑊))) → (𝑅 𝐹) = (𝑅 𝑈))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 206  wa 395  w3a 1086   = wceq 1537  wcel 2106   class class class wbr 5148  cfv 6563  (class class class)co 7431  Basecbs 17245  lecple 17305  joincjn 18369  meetcmee 18370  1.cp1 18482  Latclat 18489  OLcol 39156  Atomscatm 39245  HLchlt 39332  LHypclh 39967
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-rep 5285  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438  ax-un 7754
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-rmo 3378  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-csb 3909  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-iun 4998  df-iin 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5583  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-f1 6568  df-fo 6569  df-f1o 6570  df-fv 6571  df-riota 7388  df-ov 7434  df-oprab 7435  df-mpo 7436  df-1st 8013  df-2nd 8014  df-proset 18352  df-poset 18371  df-plt 18388  df-lub 18404  df-glb 18405  df-join 18406  df-meet 18407  df-p0 18483  df-p1 18484  df-lat 18490  df-clat 18557  df-oposet 39158  df-ol 39160  df-oml 39161  df-covers 39248  df-ats 39249  df-atl 39280  df-cvlat 39304  df-hlat 39333  df-psubsp 39486  df-pmap 39487  df-padd 39779  df-lhyp 39971
This theorem is referenced by:  cdleme2  40211  cdleme3b  40212  cdleme3c  40213  cdleme5  40223  cdleme11  40253  cdleme12  40254  cdleme16c  40263  cdleme20g  40298  cdleme35a  40431  cdleme36a  40443
  Copyright terms: Public domain W3C validator