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| Mirrors > Home > ILE Home > Th. List > sqxpexg | GIF version | ||
| Description: The Cartesian square of a set is a set. (Contributed by AV, 13-Jan-2020.) |
| Ref | Expression |
|---|---|
| sqxpexg | ⊢ (𝐴 ∈ 𝑉 → (𝐴 × 𝐴) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpexg 4794 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐴 ∈ 𝑉) → (𝐴 × 𝐴) ∈ V) | |
| 2 | 1 | anidms 397 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 × 𝐴) ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2177 Vcvv 2773 × cxp 4678 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4167 ax-pow 4223 ax-pr 4258 ax-un 4485 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-rex 2491 df-v 2775 df-un 3172 df-in 3174 df-ss 3181 df-pw 3620 df-sn 3641 df-pr 3642 df-op 3644 df-uni 3854 df-opab 4111 df-xp 4686 |
| This theorem is referenced by: ispsmet 14845 ismet 14866 isxmet 14867 xmetunirn 14880 |
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