Theorem dia2dimlem4 36356

Description: Lemma for dia2dim 36366. Show that the composition (sum) of translations (vectors) 𝐺 and 𝐷 equals 𝐹. Part of proof of Lemma M in [Crawley] p. 121 line 5. (Contributed by NM, 8-Sep-2014.)

Hypotheses

Ref	Expression
dia2dimlem4.l	⊢ ≤ = (le‘𝐾)
dia2dimlem4.a	⊢ 𝐴 = (Atoms‘𝐾)
dia2dimlem4.h	⊢ 𝐻 = (LHyp‘𝐾)
dia2dimlem4.t	⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
dia2dimlem4.k	⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
dia2dimlem4.p	⊢ (𝜑 → (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊))
dia2dimlem4.f	⊢ (𝜑 → 𝐹 ∈ 𝑇)
dia2dimlem4.g	⊢ (𝜑 → 𝐺 ∈ 𝑇)
dia2dimlem4.gv	⊢ (𝜑 → (𝐺‘𝑃) = 𝑄)
dia2dimlem4.d	⊢ (𝜑 → 𝐷 ∈ 𝑇)
dia2dimlem4.dv	⊢ (𝜑 → (𝐷‘𝑄) = (𝐹‘𝑃))

Assertion

Ref	Expression
dia2dimlem4	⊢ (𝜑 → (𝐷 ∘ 𝐺) = 𝐹)

Proof of Theorem dia2dimlem4

Step	Hyp	Ref	Expression
1		dia2dimlem4.k	. 2 ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
2		dia2dimlem4.d	. . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑇)
3		dia2dimlem4.g	. . 3 ⊢ (𝜑 → 𝐺 ∈ 𝑇)
4		dia2dimlem4.h	. . . 4 ⊢ 𝐻 = (LHyp‘𝐾)
5		dia2dimlem4.t	. . . 4 ⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
6	4, 5	ltrnco 36007	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝐷 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇) → (𝐷 ∘ 𝐺) ∈ 𝑇)
7	1, 2, 3, 6	syl3anc 1326	. 2 ⊢ (𝜑 → (𝐷 ∘ 𝐺) ∈ 𝑇)
8		dia2dimlem4.f	. 2 ⊢ (𝜑 → 𝐹 ∈ 𝑇)
9		dia2dimlem4.p	. 2 ⊢ (𝜑 → (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊))
10	9	simpld 475	. . . 4 ⊢ (𝜑 → 𝑃 ∈ 𝐴)
11		dia2dimlem4.l	. . . . 5 ⊢ ≤ = (le‘𝐾)
12		dia2dimlem4.a	. . . . 5 ⊢ 𝐴 = (Atoms‘𝐾)
13	11, 12, 4, 5	ltrncoval 35431	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝐷 ∈ 𝑇 ∧ 𝐺 ∈ 𝑇) ∧ 𝑃 ∈ 𝐴) → ((𝐷 ∘ 𝐺)‘𝑃) = (𝐷‘(𝐺‘𝑃)))
14	1, 2, 3, 10, 13	syl121anc 1331	. . 3 ⊢ (𝜑 → ((𝐷 ∘ 𝐺)‘𝑃) = (𝐷‘(𝐺‘𝑃)))
15		dia2dimlem4.gv	. . . 4 ⊢ (𝜑 → (𝐺‘𝑃) = 𝑄)
16	15	fveq2d 6195	. . 3 ⊢ (𝜑 → (𝐷‘(𝐺‘𝑃)) = (𝐷‘𝑄))
17		dia2dimlem4.dv	. . 3 ⊢ (𝜑 → (𝐷‘𝑄) = (𝐹‘𝑃))
18	14, 16, 17	3eqtrd 2660	. 2 ⊢ (𝜑 → ((𝐷 ∘ 𝐺)‘𝑃) = (𝐹‘𝑃))
19	11, 12, 4, 5	cdlemd 35494	. 2 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝐷 ∘ 𝐺) ∈ 𝑇 ∧ 𝐹 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ ((𝐷 ∘ 𝐺)‘𝑃) = (𝐹‘𝑃)) → (𝐷 ∘ 𝐺) = 𝐹)
20	1, 7, 8, 9, 18, 19	syl311anc 1340	1 ⊢ (𝜑 → (𝐷 ∘ 𝐺) = 𝐹)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 384   = wceq 1483   ∈ wcel 1990   class class class wbr 4653   ∘ ccom 5118  ‘cfv 5888  lecple 15948  Atomscatm 34550  HLchlt 34637  LHypclh 35270  LTrncltrn 35387

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-riotaBAD 34239

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-iin 4523  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-1st 7168  df-2nd 7169  df-undef 7399  df-map 7859  df-preset 16928  df-poset 16946  df-plt 16958  df-lub 16974  df-glb 16975  df-join 16976  df-meet 16977  df-p0 17039  df-p1 17040  df-lat 17046  df-clat 17108  df-oposet 34463  df-ol 34465  df-oml 34466  df-covers 34553  df-ats 34554  df-atl 34585  df-cvlat 34609  df-hlat 34638  df-llines 34784  df-lplanes 34785  df-lvols 34786  df-lines 34787  df-psubsp 34789  df-pmap 34790  df-padd 35082  df-lhyp 35274  df-laut 35275  df-ldil 35390  df-ltrn 35391  df-trl 35446

This theorem is referenced by:  dia2dimlem5  36357