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Related theorems GIF version |
| Description: Value of join for subsets of Hilbert space in terms of supremum: the join is the supremum of its two arguments. Based on the definition of join in [Beran] p. 3. |
| Ref | Expression |
|---|---|
| sshjval3t | ⊢ ((A ⊆ ℋ ⋀ B ⊆ ℋ ) → (A ∨ℋ B) = ( ∨ℋ ‘{A, B})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvex 3738 | . . 3 ⊢ ( ∨ℋ ‘{A, B}) ∈ V | |
| 2 | preq1 2452 | . . . 4 ⊢ (x = A → {x, y} = {A, y}) | |
| 3 | 2 | fveq2d 3734 | . . 3 ⊢ (x = A → ( ∨ℋ ‘{x, y}) = ( ∨ℋ ‘{A, y})) |
| 4 | preq2 2453 | . . . 4 ⊢ (y = B → {A, y} = {A, B}) | |
| 5 | 4 | fveq2d 3734 | . . 3 ⊢ (y = B → ( ∨ℋ ‘{A, y}) = ( ∨ℋ ‘{A, B})) |
| 6 | dfchj3 9320 | . . . 4 ⊢ ∨ℋ = {〈〈x, y〉, z〉∣((x ⊆ ℋ ⋀ y ⊆ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))} | |
| 7 | ax-hilex 8864 | . . . . . . . 8 ⊢ ℋ ∈ V | |
| 8 | 7 | elpw2 2733 | . . . . . . 7 ⊢ (x ∈ ℘ ℋ ↔ x ⊆ ℋ ) |
| 9 | 7 | elpw2 2733 | . . . . . . 7 ⊢ (y ∈ ℘ ℋ ↔ y ⊆ ℋ ) |
| 10 | 8, 9 | anbi12i 484 | . . . . . 6 ⊢ ((x ∈ ℘ ℋ ⋀ y ∈ ℘ ℋ ) ↔ (x ⊆ ℋ ⋀ y ⊆ ℋ )) |
| 11 | 10 | anbi1i 483 | . . . . 5 ⊢ (((x ∈ ℘ ℋ ⋀ y ∈ ℘ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y})) ↔ ((x ⊆ ℋ ⋀ y ⊆ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))) |
| 12 | 11 | oprabbii 4003 | . . . 4 ⊢ {〈〈x, y〉, z〉∣((x ∈ ℘ ℋ ⋀ y ∈ ℘ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))} = {〈〈x, y〉, z〉∣((x ⊆ ℋ ⋀ y ⊆ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))} |
| 13 | 6, 12 | eqtr4 1501 | . . 3 ⊢ ∨ℋ = {〈〈x, y〉, z〉∣((x ∈ ℘ ℋ ⋀ y ∈ ℘ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))} |
| 14 | 1, 3, 5, 13 | oprabval2 4034 | . 2 ⊢ ((A ∈ ℘ ℋ ⋀ B ∈ ℘ ℋ ) → (A ∨ℋ B) = ( ∨ℋ ‘{A, B})) |
| 15 | 7 | elpw2 2733 | . 2 ⊢ (A ∈ ℘ ℋ ↔ A ⊆ ℋ ) |
| 16 | 7 | elpw2 2733 | . 2 ⊢ (B ∈ ℘ ℋ ↔ B ⊆ ℋ ) |
| 17 | 14, 15, 16 | syl2anbr 458 | 1 ⊢ ((A ⊆ ℋ ⋀ B ⊆ ℋ ) → (A ∨ℋ B) = ( ∨ℋ ‘{A, B})) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ⋀ wa 223 = wceq 958 ∈ wcel 960 ⊆ wss 2050 ℘cpw 2405 {cpr 2414 ‘cfv 3188 (class class class)co 3969 {copab2 3970 ℋ chil 8783 ∨ℋ chj 8797 ∨ℋ chsup 8798 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-rep 2698 ax-sep 2708 ax-nul 2715 ax-pow 2748 ax-pr 2785 ax-un 2872 ax-reg 4602 ax-inf2 4634 ax-ac 4754 ax-hilex 8864 ax-hfvadd 8865 ax-hvcom 8866 ax-hvass 8867 ax-hv0cl 8868 ax-hvaddid 8869 ax-hfvmul 8870 ax-hvmulid 8871 ax-hvmulass 8872 ax-hvdistr1 8873 ax-hvdistr2 8874 ax-hvmul0 8875 ax-hfi 8941 ax-his1 8944 ax-his2 8945 ax-his3 8946 ax-his4 8947 ax-hcompl 9066 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 778 df-3an 779 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-nel 1591 df-ral 1652 df-rex 1653 df-reu 1654 df-rab 1655 df-v 1815 df-sbc 1945 df-csb 2005 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-pss 2058 df-nul 2284 df-if 2366 df-pw 2406 df-sn 2416 df-pr 2417 df-tp 2419 df-op 2420 df-uni 2508 df-int 2538 df-iun 2572 df-iin 2573 df-br 2625 df-opab 2672 df-tr 2686 df-eprel 2838 df-id 2841 df-po 2846 df-so 2856 df-fr 2923 df-we 2940 df-ord 2957 df-on 2958 df-lim 2959 df-suc 2960 df-om 3138 df-xp 3190 df-rel 3191 df-cnv 3192 df-co 3193 df-dm 3194 df-rn 3195 df-res 3196 df-ima 3197 df-fun 3198 df-fn 3199 df-f 3200 df-f1 3201 df-fo 3202 df-f1o 3203 df-fv 3204 df-rdg 3938 df-opr 3971 df-oprab 3972 df-1st 4085 df-2nd 4086 df-1o 4139 df-oadd 4141 df-omul 4142 df-er 4267 df-ec 4269 df-qs 4272 df-map 4330 df-en 4374 df-dom 4375 df-sdom 4376 df-sup 4583 df-r1 4653 df-rank 4654 df-ni 5012 df-pli 5013 df-mi 5014 df-lti 5015 df-plpq 5047 df-mpq 5048 df-enq 5049 df-nq 5050 df-plq 5051 df-mq 5052 df-rq 5053 df-ltq 5054 df-1q 5055 df-np 5098 df-1p 5099 df-plp 5100 df-mp 5101 df-ltp 5102 df-plpr 5176 df-mpr 5177 df-enr 5178 df-nr 5179 df-plr 5180 df-mr 5181 df-ltr 5182 df-0r 5183 df-1r 5184 df-m1r 5185 df-c 5252 df-0 5253 df-1 5254 df-i 5255 df-r 5256 df-plus 5257 df-mul 5258 df-lt 5259 df-sub 5368 df-neg 5370 df-pnf 5499 df-mnf 5500 df-xr 5501 df-ltxr 5502 df-le 5503 df-div 5715 df-n 5927 df-2 5972 df-3 5973 df-4 5974 df-n0 6102 df-z 6138 df-fl 6226 df-q 6257 df-seq1 6309 df-shft 6342 df-ioo 6362 df-uz 6419 df-fz 6469 df-seqz 6534 df-exp 6570 df-sqr 6671 df-re 6752 df-im 6753 df-cj 6754 df-abs 6755 df-clim 6975 df-sum 6980 df-top 7594 df-bases 7596 df-topgen 7597 df-cld 7660 df-ntr 7661 df-cls 7662 df-cn 7751 df-cnp 7752 df-haus 7779 df-met 7790 df-bl 7792 df-opn 7793 df-lm 7919 df-grp 8034 df-gid 8035 df-ginv 8036 df-gdiv 8037 df-abl 8096 df-vc 8161 df-nv 8207 df-va 8210 df-ba 8211 df-sm 8212 df-0v 8213 df-vs 8214 df-nm 8215 df-ims 8216 df-ip 8346 df-ph 8468 df-hnorm 8832 df-hvsub 8835 df-hlim 8836 df-hcau 8837 df-sh 9071 df-ch 9087 df-oc 9119 df-ch0 9120 df-chj 9270 df-chsup 9271 |