| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > reximi | GIF version | ||
| Description: Inference quantifying both antecedent and consequent. (Contributed by NM, 18-Oct-1996.) |
| Ref | Expression |
|---|---|
| reximi.1 | ⊢ (𝜑 → 𝜓) |
| Ref | Expression |
|---|---|
| reximi | ⊢ (∃𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐴 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reximi.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 2 | 1 | a1i 9 | . 2 ⊢ (𝑥 ∈ 𝐴 → (𝜑 → 𝜓)) |
| 3 | 2 | reximia 2645 | 1 ⊢ (∃𝑥 ∈ 𝐴 𝜑 → ∃𝑥 ∈ 𝐴 𝜓) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ∃wrex 2529 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-4 1563 ax-ial 1587 |
| This proof depends on definitions: df-bi 117 df-ral 2533 df-rex 2534 |
| This theorem is used by: rexanaliim 2656 r19.29d2r 2695 r19.35-1 2701 r19.40 2705 reu3 3016 ssiun 4054 iinss 4064 elunirn 5975 tfrcllemssrecs 6627 nnawordex 6806 iinerm 6885 erovlem 6905 xpf1o 7149 fidcenumlemim 7275 omniwomnimkv 7514 genprndl 7895 genprndu 7896 appdiv0nq 7938 ltexprlemm 7974 recexsrlem 8148 rereceu 8263 recexre 8915 aprcl 8983 rexanre 12010 climi2 12080 climi0 12081 climcaucn 12143 prodmodclem2 12370 prodmodc 12371 gcdsupex 12760 gcdsupcl 12761 bezoutlemeu 12810 dfgcd3 12813 isnsgrp 13781 rhmdvdsr 14592 eltg2b 15292 lmcvg 15455 cnptoprest 15477 lmtopcnp 15488 txbas 15496 metrest 15744 elply2 15973 2sqlem7 16457 umgr2edg1 16667 umgr2edgneu 16670 bj-charfunbi 17054 bj-findis 17222 |
| Copyright terms: Public domain | W3C validator |