| Metamath Proof Explorer |
< Previous
Next >
Related theorems GIF version |
| Description: Inference from Theorem 19.23 of [Margaris] p. 90. |
| Ref | Expression |
|---|---|
| 19.23aiv.1 | ⊢ (φ → ψ) |
| Ref | Expression |
|---|---|
| 19.23aiv | ⊢ (∃xφ → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 925 | . 2 ⊢ (ψ → ∀xψ) | |
| 2 | 19.23aiv.1 | . 2 ⊢ (φ → ψ) | |
| 3 | 1, 2 | 19.23ai 746 | 1 ⊢ (∃xφ → ψ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∃wex 678 |
| This theorem is referenced by: 19.23aivv 953 mo 1020 mopick 1054 zfext2 1087 gencl 1365 vtocleg 1390 eqvinc 1407 sbcie 1455 bm1.3ii 1481 moabex 1868 nnullss 1880 exss 1881 mosubop 1911 eluni 1922 unipw 1960 intex 1986 ssopab2 2119 findsg 2398 tfindsg 2402 dmexg 2551 rnexg 2569 elxp5 2641 ffoss 2820 fvopabn 2873 tfrlem8 2956 tfrlem9 2957 fnoprab 3038 erref 3212 ectocl 3238 ecoptocl 3239 mapprc 3260 map0b 3267 map0 3268 breng 3280 brdomg 3281 ener 3313 en0 3328 en1 3331 2dom 3332 undom 3342 xpdom2 3345 xpdom3 3347 pw2en 3348 mapen 3386 mapdom1 3387 mapdom2 3389 ssenen 3399 php 3409 0sdom1dom 3420 unfilem1 3438 inf3 3471 inf5 3472 omex 3475 zfregs 3491 tz9.12lem1 3503 bnd2 3549 aceq3lem 3555 aceq4 3557 aceq5lem4 3561 aceq5lem5 3562 aceq5 3563 aceq6a 3564 aceq6b 3565 ac6lem 3575 ac6s 3577 kmlem2 3581 kmlem16 3595 numthlem 3598 weth 3602 fodomb 3615 oncard 3636 carduni 3664 cardcf 3706 cfsuc 3709 cfom 3710 ltbtwnpq 3878 ltaprlem 3944 reclem1pr 3950 reclem2pr 3951 reclem3pr 3952 map2psrpr 4014 supsrlem2 4020 suprelem 4053 renegcl 4171 redivcl 4274 nnunb 4520 infxpidmlem4 4936 infxpidmlem7 4939 infxpidmlem10 4942 infxpidmlem12 4944 infmap2lem2 4952 projlem 5224 shintcl 5294 pjrn 5587 strlem1 5691 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-gen 677 ax-17 925 |
| This theorem depends on definitions: df-bi 128 df-an 198 df-ex 679 |