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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 5714 | . 2 ⊢ ((Rel 𝑅 ∧ 𝐴𝑅𝐵) → 𝐴 ∈ V) | |
| 3 | 1, 2 | mpan 702 | 1 ⊢ (𝐴𝑅𝐵 → 𝐴 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2143 Vcvv 3455 class class class wbr 5109 Rel wrel 5666 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-xp 5667 df-rel 5668 |
| This theorem is used by: nprrel 5720 opeliunxp2 5824 ideqg 5837 issetid 5840 dffv2 6976 brfvopabrbr 6986 brrpssg 7722 opeliunxp2f 8202 brtpos2 8224 brdomg 8951 ctex 8956 isfi 8968 domssr 8992 domdifsn 9044 xpdom2 9056 xpdom1g 9058 sbth 9081 sdomirr 9098 sdomdif 9109 fodomr 9112 pwdom 9113 xpen 9124 pwen 9134 sbthfi 9179 sucdom2 9183 fineqv 9223 infsdomnn 9257 relprcnfsupp 9320 fsuppssov1 9340 fsuppunbi 9345 mapfien2 9365 harword 9521 brwdom 9525 domwdom 9532 brwdom3i 9541 unwdomg 9542 xpwdomg 9543 infdifsn 9622 ac10ct 10023 inffien 10052 djuen 10158 djudom2 10172 djufi 10175 cdainflem 10176 djulepw 10181 infdjuabs 10193 infunabs 10194 infmap2 10205 cfslb2n 10256 fin4i 10286 isfin5 10287 isfin6 10288 fin4en1 10297 isfin4p1 10303 isfin32i 10353 fin45 10380 fin56 10381 fin67 10383 hsmexlem1 10414 hsmexlem3 10416 axcc3 10426 ttukeylem1 10497 brdom3 10516 iundom2g 10528 iundom 10530 gchi 10613 engch 10617 gchdomtri 10618 fpwwe2lem5 10624 fpwwe2lem6 10625 fpwwe2lem8 10627 gchdjuidm 10657 gchpwdom 10659 prcdnq 10982 reexALT 13012 hasheni 14389 hashdomi 14421 climcl 15555 climi 15566 climrlim2 15603 climrecl 15639 climge0 15640 iseralt 15741 climfsum 15877 structex 17214 issubc 17896 pmtrfv 19526 dprdval 20079 frgpcyg 21732 lindff 21974 lindfind 21975 f1lindf 21981 lindfmm 21986 lsslindf 21989 lbslcic 22000 psrbaglesupp 22081 hauspwdom 23667 refbas 23676 refssex 23677 reftr 23680 refun0 23681 ovoliunnul 25675 dvle 26175 cyclnspth 30159 hlimi 31549 gsumhashmul 33396 extdgval 34052 finextfldext 34063 kardenir 35579 karddom 35582 kardsdom 35583 usgrgt2cycl 35630 brsset 36387 brbigcup 36396 elfix2 36402 brcolinear2 36558 isfne 36878 refssfne 36897 bj-epelg 37732 bj-ideqb 37831 bj-opelidb1ALT 37838 ovoliunnfl 38341 voliunnfl 38343 volsupnfl 38344 brabg2 38396 heiborlem4 38493 isrngo 38576 isdivrngo 38629 brssr 39258 issetssr 39260 fphpd 43571 ctbnfien 43573 sdomne0 44167 climd 46414 climuzlem 46485 rlimdmafv 47942 rlimdmafv2 48023 imasubc 49957 imassc 49959 imaid 49960 imaf1co 49961 imasubc3 49962 fuco112 50135 fuco111 50136 fuco21 50142 fucoid 50154 |
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