| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > ssrexv | Structured version Visualization version GIF version | ||
| Description: Existential quantification restricted to a subclass. (Contributed by NM, 11-Jan-2007.) Avoid axioms. (Revised by GG, 19-May-2025.) |
| Ref | Expression |
|---|---|
| ssrexv | ⊢ (𝐴 ⊆ 𝐵 → (∃𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐵 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ss 3907 | . 2 ⊢ (𝐴 ⊆ 𝐵 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)) | |
| 2 | pm3.45 628 | . . . 4 ⊢ ((𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵) → ((𝑥 ∈ 𝐴 ∧ 𝜑) → (𝑥 ∈ 𝐵 ∧ 𝜑))) | |
| 3 | 2 | aleximi 1839 | . . 3 ⊢ (∀𝑥(𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵) → (∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) → ∃𝑥(𝑥 ∈ 𝐵 ∧ 𝜑))) |
| 4 | df-rex 3065 | . . 3 ⊢ (∃𝑥 ∈ 𝐴 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑)) | |
| 5 | df-rex 3065 | . . 3 ⊢ (∃𝑥 ∈ 𝐵 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐵 ∧ 𝜑)) | |
| 6 | 3, 4, 5 | 3imtr4g 297 | . 2 ⊢ (∀𝑥(𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵) → (∃𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐵 𝜑)) |
| 7 | 1, 6 | sylbi 218 | 1 ⊢ (𝐴 ⊆ 𝐵 → (∃𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐵 𝜑)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 ∀wal 1545 ∃wex 1786 ∈ wcel 2119 ∃wrex 3064 ⊆ wss 3890 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-rex 3065 df-ss 3907 |
| This theorem is referenced by: ss2rexv 3993 ssn0rex 4293 iunss1 4943 onfr 6356 moriotass 7352 frxp 8073 frfi 9192 fisupcl 9380 supgtoreq 9381 brwdom3 9494 unwdomg 9496 frmin 9671 tcrank 9806 hsmexlem2 10347 pwfseqlem3 10581 grur1 10741 suplem1pr 10973 fimaxre2 12099 fiminre2 12102 suprfinzcl 12641 lbzbi 12884 suprzub 12887 uzsupss 12888 zmin 12892 ssnn0fi 13945 elss2prb 14448 scshwfzeqfzo 14786 rexico 15314 rlim3 15458 rlimclim 15506 caurcvgr 15634 alzdvds 16287 bitsfzolem 16401 pclem 16807 0ram2 16990 0ramcl 16992 symgextfo 19395 lsmless1x 19617 lsmless2x 19618 dprdss 20004 ablfac2 20064 subrgdvds 20565 ssrest 23166 locfincf 23521 fbun 23830 fgss 23863 isucn2 24268 metust 24548 psmetutop 24557 lebnumlem3 24955 lebnum 24956 cfil3i 25261 cfilss 25262 fgcfil 25263 iscau4 25271 ivthle 25448 ivthle2 25449 lhop1lem 26005 lhop2 26007 ply1divex 26127 plyss 26189 dgrlem 26219 elqaa 26313 aannenlem2 26320 reeff1olem 26436 rlimcnp 26954 ftalem3 27063 2sqreultblem 27436 2sqreunnlem1 27437 2sqreunnltblem 27439 pntlem3 27597 madess 27883 addsuniflem 28018 mulsuniflem 28166 tgisline 28720 axcontlem2 29059 frgrwopreg1 30413 frgrwopreg2 30414 shless 31455 xlt2addrd 32858 ssnnssfz 32886 xreceu 33007 archirngz 33277 archiabllem1b 33280 1arithidom 33627 dfufd2lem 33639 locfinreflem 34031 crefss 34040 esumpcvgval 34269 sigaclci 34323 eulerpartlemgvv 34567 eulerpartlemgh 34569 signsply0 34742 iccllysconn 35485 satfvsucsuc 35600 fgmin 36605 knoppndvlem18 36842 poimirlem26 38020 poimirlem30 38024 volsupnfl 38039 cover2 38089 filbcmb 38114 istotbnd3 38145 sstotbnd 38149 heibor1lem 38183 isdrngo2 38332 isdrngo3 38333 qsss1 38669 islsati 39493 paddss1 40316 paddss2 40317 hdmap14lem2a 42366 prjspreln0 43066 pellfundre 43333 pellfundge 43334 pellfundglb 43337 hbtlem3 43579 hbtlem5 43580 itgoss 43615 radcnvrat 44765 uzubico 46018 uzubico2 46020 climleltrp 46126 fourierdlem20 46577 smflimlem2 47222 nndivides2 47854 iccelpart 47915 fmtnofac2 48054 grtriprop 48439 ssnn0ssfz 48847 pgrpgt2nabl 48864 eenglngeehlnmlem1 49235 |
| Copyright terms: Public domain | W3C validator |