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Mirrors > Home > MPE Home > Th. List > odumeet | Structured version Visualization version GIF version |
Description: Meets in a dual order are joins in the original. (Contributed by Stefan O'Rear, 29-Jan-2015.) |
Ref | Expression |
---|---|
oduglb.d | ⊢ 𝐷 = (ODual‘𝑂) |
odumeet.j | ⊢ ∨ = (join‘𝑂) |
Ref | Expression |
---|---|
odumeet | ⊢ ∨ = (meet‘𝐷) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | odumeet.j | . 2 ⊢ ∨ = (join‘𝑂) | |
2 | oduglb.d | . . . . . . 7 ⊢ 𝐷 = (ODual‘𝑂) | |
3 | eqid 2740 | . . . . . . 7 ⊢ (lub‘𝑂) = (lub‘𝑂) | |
4 | 2, 3 | oduglb 18125 | . . . . . 6 ⊢ (𝑂 ∈ V → (lub‘𝑂) = (glb‘𝐷)) |
5 | 4 | breqd 5090 | . . . . 5 ⊢ (𝑂 ∈ V → ({𝑎, 𝑏} (lub‘𝑂)𝑐 ↔ {𝑎, 𝑏} (glb‘𝐷)𝑐)) |
6 | 5 | oprabbidv 7335 | . . . 4 ⊢ (𝑂 ∈ V → {〈〈𝑎, 𝑏〉, 𝑐〉 ∣ {𝑎, 𝑏} (lub‘𝑂)𝑐} = {〈〈𝑎, 𝑏〉, 𝑐〉 ∣ {𝑎, 𝑏} (glb‘𝐷)𝑐}) |
7 | eqid 2740 | . . . . 5 ⊢ (join‘𝑂) = (join‘𝑂) | |
8 | 3, 7 | joinfval 18089 | . . . 4 ⊢ (𝑂 ∈ V → (join‘𝑂) = {〈〈𝑎, 𝑏〉, 𝑐〉 ∣ {𝑎, 𝑏} (lub‘𝑂)𝑐}) |
9 | 2 | fvexi 6785 | . . . . 5 ⊢ 𝐷 ∈ V |
10 | eqid 2740 | . . . . . 6 ⊢ (glb‘𝐷) = (glb‘𝐷) | |
11 | eqid 2740 | . . . . . 6 ⊢ (meet‘𝐷) = (meet‘𝐷) | |
12 | 10, 11 | meetfval 18103 | . . . . 5 ⊢ (𝐷 ∈ V → (meet‘𝐷) = {〈〈𝑎, 𝑏〉, 𝑐〉 ∣ {𝑎, 𝑏} (glb‘𝐷)𝑐}) |
13 | 9, 12 | mp1i 13 | . . . 4 ⊢ (𝑂 ∈ V → (meet‘𝐷) = {〈〈𝑎, 𝑏〉, 𝑐〉 ∣ {𝑎, 𝑏} (glb‘𝐷)𝑐}) |
14 | 6, 8, 13 | 3eqtr4d 2790 | . . 3 ⊢ (𝑂 ∈ V → (join‘𝑂) = (meet‘𝐷)) |
15 | fvprc 6763 | . . . 4 ⊢ (¬ 𝑂 ∈ V → (join‘𝑂) = ∅) | |
16 | fvprc 6763 | . . . . . . 7 ⊢ (¬ 𝑂 ∈ V → (ODual‘𝑂) = ∅) | |
17 | 2, 16 | eqtrid 2792 | . . . . . 6 ⊢ (¬ 𝑂 ∈ V → 𝐷 = ∅) |
18 | 17 | fveq2d 6775 | . . . . 5 ⊢ (¬ 𝑂 ∈ V → (meet‘𝐷) = (meet‘∅)) |
19 | meet0 18122 | . . . . 5 ⊢ (meet‘∅) = ∅ | |
20 | 18, 19 | eqtrdi 2796 | . . . 4 ⊢ (¬ 𝑂 ∈ V → (meet‘𝐷) = ∅) |
21 | 15, 20 | eqtr4d 2783 | . . 3 ⊢ (¬ 𝑂 ∈ V → (join‘𝑂) = (meet‘𝐷)) |
22 | 14, 21 | pm2.61i 182 | . 2 ⊢ (join‘𝑂) = (meet‘𝐷) |
23 | 1, 22 | eqtri 2768 | 1 ⊢ ∨ = (meet‘𝐷) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 = wceq 1542 ∈ wcel 2110 Vcvv 3431 ∅c0 4262 {cpr 4569 class class class wbr 5079 ‘cfv 6432 {coprab 7272 ODualcodu 18002 lubclub 18025 glbcglb 18026 joincjn 18027 meetcmee 18028 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-dec 12437 df-sets 16863 df-slot 16881 df-ndx 16893 df-base 16911 df-ple 16980 df-odu 18003 df-lub 18062 df-glb 18063 df-join 18064 df-meet 18065 |
This theorem is referenced by: odulatb 18150 latdisd 18213 odudlatb 18241 dlatjmdi 18242 |
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