Theorem atcmp 39899

Description: If two atoms are comparable, they are equal. (atsseq 32496 analog.) (Contributed by NM, 13-Oct-2011.)

Hypotheses

Ref	Expression
atcmp.l	⊢ ≤ = (le‘𝐾)
atcmp.a	⊢ 𝐴 = (Atoms‘𝐾)

Assertion

Ref	Expression
atcmp	⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (𝑃 ≤ 𝑄 ↔ 𝑃 = 𝑄))

Proof of Theorem atcmp

Step	Hyp	Ref	Expression
1		atlpos 39889	. . 3 ⊢ (𝐾 ∈ AtLat → 𝐾 ∈ Poset)
2	1	3ad2ant1 1145	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → 𝐾 ∈ Poset)
3		eqid 2761	. . . 4 ⊢ (Base‘𝐾) = (Base‘𝐾)
4		atcmp.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
5	3, 4	atbase 39877	. . 3 ⊢ (𝑃 ∈ 𝐴 → 𝑃 ∈ (Base‘𝐾))
6	5	3ad2ant2 1146	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → 𝑃 ∈ (Base‘𝐾))
7	3, 4	atbase 39877	. . 3 ⊢ (𝑄 ∈ 𝐴 → 𝑄 ∈ (Base‘𝐾))
8	7	3ad2ant3 1147	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → 𝑄 ∈ (Base‘𝐾))
9		eqid 2761	. . . 4 ⊢ (0.‘𝐾) = (0.‘𝐾)
10	3, 9	atl0cl 39891	. . 3 ⊢ (𝐾 ∈ AtLat → (0.‘𝐾) ∈ (Base‘𝐾))
11	10	3ad2ant1 1145	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (0.‘𝐾) ∈ (Base‘𝐾))
12		eqid 2761	. . . 4 ⊢ ( ⋖ ‘𝐾) = ( ⋖ ‘𝐾)
13	9, 12, 4	atcvr0 39876	. . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴) → (0.‘𝐾)( ⋖ ‘𝐾)𝑃)
14	13	3adant3 1144	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (0.‘𝐾)( ⋖ ‘𝐾)𝑃)
15	9, 12, 4	atcvr0 39876	. . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑄 ∈ 𝐴) → (0.‘𝐾)( ⋖ ‘𝐾)𝑄)
16	15	3adant2 1143	. 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (0.‘𝐾)( ⋖ ‘𝐾)𝑄)
17		atcmp.l	. . 3 ⊢ ≤ = (le‘𝐾)
18	3, 17, 12	cvrcmp 39871	. 2 ⊢ ((𝐾 ∈ Poset ∧ (𝑃 ∈ (Base‘𝐾) ∧ 𝑄 ∈ (Base‘𝐾) ∧ (0.‘𝐾) ∈ (Base‘𝐾)) ∧ ((0.‘𝐾)( ⋖ ‘𝐾)𝑃 ∧ (0.‘𝐾)( ⋖ ‘𝐾)𝑄)) → (𝑃 ≤ 𝑄 ↔ 𝑃 = 𝑄))
19	2, 6, 8, 11, 14, 16, 18	syl132anc 1406	1 ⊢ ((𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) → (𝑃 ≤ 𝑄 ↔ 𝑃 = 𝑄))

Syntax hints:   → wi 4   ↔ wb 208   ∧ w3a 1097   = wceq 1559   ∈ wcel 2141   class class class wbr 5099  ‘cfv 6517  Basecbs 17228  lecple 17276  Posetcpo 18322  0.cp0 18436   ⋖ ccvr 39850  Atomscatm 39851  AtLatcal 39852

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-rep 5226  ax-sep 5245  ax-nul 5255  ax-pow 5321  ax-pr 5389  ax-un 7714

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-rmo 3366  df-reu 3367  df-rab 3414  df-v 3455  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-iun 4950  df-br 5100  df-opab 5162  df-mpt 5181  df-id 5540  df-xp 5651  df-rel 5652  df-cnv 5653  df-co 5654  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-iota 6473  df-fun 6519  df-fn 6520  df-f 6521  df-f1 6522  df-fo 6523  df-f1o 6524  df-fv 6525  df-riota 7349  df-proset 18309  df-poset 18328  df-plt 18343  df-glb 18360  df-p0 18438  df-lat 18447  df-covers 39854  df-ats 39855  df-atl 39886

This theorem is referenced by:  atncmp  39900  atnlt  39901  atnle  39905  cvlsupr2  39931  cvratlem  40009  2atjm  40033  atbtwn  40034  2atm  40115  2llnmeqat  40159  dalem25  40286  dalem55  40315  dalem57  40317  snatpsubN  40338  pmapat  40351  2llnma1b  40374  cdlemblem  40381  lhp2at0nle  40623  lhpat3  40634  4atexlemcnd  40660  trlval3  40775  cdlemc5  40783  cdleme3  40825  cdleme7  40837  cdleme11k  40856  cdleme16b  40867  cdleme16e  40870  cdleme16f  40871  cdlemednpq  40887  cdleme20j  40906  cdleme22aa  40927  cdleme22cN  40930  cdleme22d  40931  cdlemf2  41150  cdlemb3  41194  cdlemg12e  41235  cdlemg17dALTN  41252  cdlemg19a  41271  cdlemg27b  41284  cdlemg31d  41288  trlcone  41316  cdlemi  41408  tendotr  41418  cdlemk17  41446  cdlemk52  41542  cdleml1N  41564  dia2dimlem1  41652  dia2dimlem2  41653  dia2dimlem3  41654