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| Mirrors > Home > MPE Home > Th. List > brrelex1i | Structured version Visualization version GIF version | ||
| Description: The first argument of a binary relation exists. (An artifact of our ordered pair definition.) (Contributed by NM, 4-Jun-1998.) |
| Ref | Expression |
|---|---|
| brrelexi.1 | ⊢ Rel 𝑅 |
| Ref | Expression |
|---|---|
| brrelex1i | ⊢ (𝐴𝑅𝐵 → 𝐴 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | brrelexi.1 | . 2 ⊢ Rel 𝑅 | |
| 2 | brrelex1 5708 | . 2 ⊢ ((Rel 𝑅 ∧ 𝐴𝑅𝐵) → 𝐴 ∈ V) | |
| 3 | 1, 2 | mpan 703 | 1 ⊢ (𝐴𝑅𝐵 → 𝐴 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 Vcvv 3450 class class class wbr 5103 Rel wrel 5660 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-sep 5251 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-xp 5661 df-rel 5662 |
| This theorem is used by: nprrel 5714 opeliunxp2 5818 ideqg 5831 issetid 5834 dffv2 6974 brfvopabrbr 6984 brrpssg 7727 opeliunxp2f 8209 brtpos2 8231 brdomg 8967 ctex 8972 isfi 8984 domssr 9008 domdifsn 9061 xpdom2 9073 xpdom1g 9075 sbth 9098 sdomirr 9115 sdomdif 9126 fodomr 9129 pwdom 9130 xpen 9141 pwen 9151 sbthfi 9196 sucdom2 9200 fineqv 9240 infsdomnn 9274 relprcnfsupp 9337 fsuppssov1 9357 fsuppunbi 9362 mapfien2 9382 harword 9538 brwdom 9542 domwdom 9549 brwdom3i 9558 unwdomg 9559 xpwdomg 9560 infdifsn 9639 ac10ct 10040 inffien 10069 djuen 10175 djudom2 10189 djufi 10192 cdainflem 10193 djulepw 10198 infdjuabs 10210 infunabs 10211 infmap2 10222 cfslb2n 10273 fin4i 10303 isfin5 10304 isfin6 10305 fin4en1 10314 isfin4p1 10320 isfin32i 10370 fin45 10397 fin56 10398 fin67 10400 hsmexlem1 10431 hsmexlem3 10433 axcc3 10443 ttukeylem1 10514 brdom3 10534 iundom2g 10551 iundom 10553 gchi 10636 engch 10640 gchdomtri 10641 fpwwe2lem5 10647 fpwwe2lem6 10648 fpwwe2lem8 10650 gchdjuidm 10680 gchpwdom 10682 prcdnq 11005 reexALT 13037 hasheni 14415 hashdomi 14447 climcl 15589 climi 15600 climrlim2 15637 climrecl 15673 climge0 15674 iseralt 15775 climfsum 15910 structex 17245 issubc 17927 pmtrfv 19582 dprdval 20135 frgpcyg 21789 lindff 22031 lindfind 22032 f1lindf 22038 lindfmm 22043 lsslindf 22046 lbslcic 22057 psrbaglesupp 22140 hauspwdom 23730 refbas 23739 refssex 23740 reftr 23743 refun0 23744 ovoliunnul 25738 dvle 26237 cyclnspth 30271 hlimi 31672 gsumhashmul 33510 extdgval 34166 finextfldext 34177 kardenir 35687 karddom 35690 kardsdom 35691 usgrgt2cycl 35726 brsset 36469 brbigcup 36478 elfix2 36484 brcolinear2 36641 isfne 36961 refssfne 36980 bj-epelg 37815 bj-ideqb 37914 bj-opelidb1ALT 37921 ovoliunnfl 38414 voliunnfl 38416 volsupnfl 38417 brabg2 38470 heiborlem4 38567 isrngo 38650 isdivrngo 38703 brssr 39332 issetssr 39334 fphpd 43660 ctbnfien 43662 sdomne0 44256 climd 46503 climuzlem 46574 rlimdmafv 48068 rlimdmafv2 48149 imasubc 50080 imassc 50082 imaid 50083 imaf1co 50084 imasubc3 50085 fuco112 50258 fuco111 50259 fuco21 50265 fucoid 50277 |
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