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| Mirrors > Home > ILE Home > Th. List > opabssxp | GIF version | ||
| Description: An abstraction relation is a subset of a related cross product. (Contributed by NM, 16-Jul-1995.) |
| Ref | Expression |
|---|---|
| opabssxp | ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜑)} ⊆ (𝐴 × 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 | . . 3 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜑) → (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) | |
| 2 | 1 | ssopab2i 4422 | . 2 ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜑)} ⊆ {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)} |
| 3 | df-xp 4782 | . 2 ⊢ (𝐴 × 𝐵) = {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)} | |
| 4 | 2, 3 | sseqtrri 3283 | 1 ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜑)} ⊆ (𝐴 × 𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∧ wa 104 ∈ wcel 2209 ⊆ wss 3220 {copab 4192 × cxp 4774 |
| 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-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-in 3226 df-ss 3233 df-opab 4194 df-xp 4782 |
| This theorem is used by: brab2ga 4852 dmoprabss 6173 ecopovsym 6909 ecopovtrn 6910 ecopover 6911 ecopovsymg 6912 ecopovtrng 6913 ecopoverg 6914 opabfi 7252 netap 7627 2omotaplemap 7630 2omotaplemst 7631 enqex 7734 ltrelnq 7739 enq0ex 7813 ltrelpr 7879 enrex 8111 ltrelsr 8112 ltrelre 8207 ltrelxr 8393 dvdszrcl 12585 releqgg 14083 eqgex 14084 prdsex 14280 prdsval 14281 prdsbaslemss 14282 aprval 14701 aprap 14708 aprprop 14711 lmfval 15431 pellexlem3 16243 lgsquadlemofi 16412 lgsquadlem1 16413 lgsquadlem2 16414 |
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