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| Mirrors > Home > ILE Home > Th. List > rspcedvd | GIF version | ||
| Description: Restricted existential specialization, using implicit substitution. Variant of rspcedv 2933. (Contributed by AV, 27-Nov-2019.) |
| Ref | Expression |
|---|---|
| rspcedvd.1 | ⊢ (𝜑 → 𝐴 ∈ 𝐵) |
| rspcedvd.2 | ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒)) |
| rspcedvd.3 | ⊢ (𝜑 → 𝜒) |
| Ref | Expression |
|---|---|
| rspcedvd | ⊢ (𝜑 → ∃𝑥 ∈ 𝐵 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rspcedvd.3 | . 2 ⊢ (𝜑 → 𝜒) | |
| 2 | rspcedvd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝐵) | |
| 3 | rspcedvd.2 | . . 3 ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | rspcedv 2933 | . 2 ⊢ (𝜑 → (𝜒 → ∃𝑥 ∈ 𝐵 𝜓)) |
| 5 | 1, 4 | mpd 13 | 1 ⊢ (𝜑 → ∃𝑥 ∈ 𝐵 𝜓) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1402 ∈ 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-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-v 2823 |
| This theorem is used by: rspcime 2937 rspcedeq1vd 2939 rspcedeq2vd 2940 updjud 7422 elpq 10051 modqmuladd 10805 modqmuladdnn0 10807 modfzo0difsn 10834 wrdl1exs1 11399 negfi 11996 divconjdvds 12618 2tp1odd 12653 dfgcd2 12793 qredeu 12877 pw2dvdslemn 12945 dvdsprmpweq 13116 oddprmdvds 13135 isnsgrp 13723 dfgrp2 13834 grplrinv 13864 grpidinv 13866 dfgrp3m 13906 ringid 14333 xmettx 15613 gausslemma2dlem1a 16189 2lgslem1b 16220 usgredg4 16468 wlkvtxiedg 16598 wlkvtxiedgg 16599 umgr2cwwkdifex 16678 bj-charfunbi 16849 |
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