Theorem cdleme 40561

Description: Lemma E in [Crawley] p. 113. If p,q are atoms not under hyperplane w, then there is a unique translation f such that f(p) = q. (Contributed by NM, 11-Apr-2013.)

Hypotheses

Ref	Expression
cdleme.l	⊢ ≤ = (le‘𝐾)
cdleme.a	⊢ 𝐴 = (Atoms‘𝐾)
cdleme.h	⊢ 𝐻 = (LHyp‘𝐾)
cdleme.t	⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)

Assertion

Ref	Expression
cdleme	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) → ∃!𝑓 ∈ 𝑇 (𝑓‘𝑃) = 𝑄)

Distinct variable groups:   𝐴,𝑓   𝑓,𝐾   ≤ ,𝑓   𝑃,𝑓   𝑄,𝑓   𝑇,𝑓   𝑓,𝑊   𝑓,𝐻

Proof of Theorem cdleme

Dummy variable 𝑧 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		cdleme.l	. . 3 ⊢ ≤ = (le‘𝐾)
2		cdleme.a	. . 3 ⊢ 𝐴 = (Atoms‘𝐾)
3		cdleme.h	. . 3 ⊢ 𝐻 = (LHyp‘𝐾)
4		cdleme.t	. . 3 ⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
5	1, 2, 3, 4	cdleme50ex 40560	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) → ∃𝑓 ∈ 𝑇 (𝑓‘𝑃) = 𝑄)
6		simp11 1204	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
7		simp2l 1200	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → 𝑓 ∈ 𝑇)
8		simp2r 1201	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → 𝑧 ∈ 𝑇)
9		simp12 1205	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊))
10		eqtr3 2752	. . . . . 6 ⊢ (((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄) → (𝑓‘𝑃) = (𝑧‘𝑃))
11	10	3ad2ant3 1135	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → (𝑓‘𝑃) = (𝑧‘𝑃))
12	1, 2, 3, 4	cdlemd 40208	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑓‘𝑃) = (𝑧‘𝑃)) → 𝑓 = 𝑧)
13	6, 7, 8, 9, 11, 12	syl311anc 1386	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ (𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) ∧ ((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄)) → 𝑓 = 𝑧)
14	13	3exp 1119	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) → ((𝑓 ∈ 𝑇 ∧ 𝑧 ∈ 𝑇) → (((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄) → 𝑓 = 𝑧)))
15	14	ralrimivv 3179	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) → ∀𝑓 ∈ 𝑇 ∀𝑧 ∈ 𝑇 (((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄) → 𝑓 = 𝑧))
16		fveq1 6860	. . . 4 ⊢ (𝑓 = 𝑧 → (𝑓‘𝑃) = (𝑧‘𝑃))
17	16	eqeq1d 2732	. . 3 ⊢ (𝑓 = 𝑧 → ((𝑓‘𝑃) = 𝑄 ↔ (𝑧‘𝑃) = 𝑄))
18	17	reu4 3705	. 2 ⊢ (∃!𝑓 ∈ 𝑇 (𝑓‘𝑃) = 𝑄 ↔ (∃𝑓 ∈ 𝑇 (𝑓‘𝑃) = 𝑄 ∧ ∀𝑓 ∈ 𝑇 ∀𝑧 ∈ 𝑇 (((𝑓‘𝑃) = 𝑄 ∧ (𝑧‘𝑃) = 𝑄) → 𝑓 = 𝑧)))
19	5, 15, 18	sylanbrc 583	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) → ∃!𝑓 ∈ 𝑇 (𝑓‘𝑃) = 𝑄)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 395   ∧ w3a 1086   = wceq 1540   ∈ wcel 2109  ∀wral 3045  ∃wrex 3054  ∃!wreu 3354   class class class wbr 5110  ‘cfv 6514  lecple 17234  Atomscatm 39263  HLchlt 39350  LHypclh 39985  LTrncltrn 40102

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-rep 5237  ax-sep 5254  ax-nul 5264  ax-pow 5323  ax-pr 5390  ax-un 7714  ax-riotaBAD 38953

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-ral 3046  df-rex 3055  df-rmo 3356  df-reu 3357  df-rab 3409  df-v 3452  df-sbc 3757  df-csb 3866  df-dif 3920  df-un 3922  df-in 3924  df-ss 3934  df-nul 4300  df-if 4492  df-pw 4568  df-sn 4593  df-pr 4595  df-op 4599  df-uni 4875  df-iun 4960  df-iin 4961  df-br 5111  df-opab 5173  df-mpt 5192  df-id 5536  df-xp 5647  df-rel 5648  df-cnv 5649  df-co 5650  df-dm 5651  df-rn 5652  df-res 5653  df-ima 5654  df-iota 6467  df-fun 6516  df-fn 6517  df-f 6518  df-f1 6519  df-fo 6520  df-f1o 6521  df-fv 6522  df-riota 7347  df-ov 7393  df-oprab 7394  df-mpo 7395  df-1st 7971  df-2nd 7972  df-undef 8255  df-map 8804  df-proset 18262  df-poset 18281  df-plt 18296  df-lub 18312  df-glb 18313  df-join 18314  df-meet 18315  df-p0 18391  df-p1 18392  df-lat 18398  df-clat 18465  df-oposet 39176  df-ol 39178  df-oml 39179  df-covers 39266  df-ats 39267  df-atl 39298  df-cvlat 39322  df-hlat 39351  df-llines 39499  df-lplanes 39500  df-lvols 39501  df-lines 39502  df-psubsp 39504  df-pmap 39505  df-padd 39797  df-lhyp 39989  df-laut 39990  df-ldil 40105  df-ltrn 40106  df-trl 40160

This theorem is referenced by:  ltrniotaval  40582  cdlemeiota  40586  cdlemksv2  40848  cdlemkuv2  40868