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Mirrors > Home > MPE Home > Th. List > xpsc | Structured version Visualization version GIF version |
Description: A short expression for the pair function mapping 0 to 𝐴 and 1 to 𝐵. (Contributed by Mario Carneiro, 14-Aug-2015.) |
Ref | Expression |
---|---|
xpsc | ⊢ ◡({𝐴} +𝑐 {𝐵}) = (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | snex 4835 | . . . 4 ⊢ {𝐴} ∈ V | |
2 | snex 4835 | . . . 4 ⊢ {𝐵} ∈ V | |
3 | cdaval 8875 | . . . 4 ⊢ (({𝐴} ∈ V ∧ {𝐵} ∈ V) → ({𝐴} +𝑐 {𝐵}) = (({𝐴} × {∅}) ∪ ({𝐵} × {1𝑜}))) | |
4 | 1, 2, 3 | mp2an 704 | . . 3 ⊢ ({𝐴} +𝑐 {𝐵}) = (({𝐴} × {∅}) ∪ ({𝐵} × {1𝑜})) |
5 | 4 | cnveqi 5219 | . 2 ⊢ ◡({𝐴} +𝑐 {𝐵}) = ◡(({𝐴} × {∅}) ∪ ({𝐵} × {1𝑜})) |
6 | cnvun 5457 | . 2 ⊢ ◡(({𝐴} × {∅}) ∪ ({𝐵} × {1𝑜})) = (◡({𝐴} × {∅}) ∪ ◡({𝐵} × {1𝑜})) | |
7 | cnvxp 5470 | . . 3 ⊢ ◡({𝐴} × {∅}) = ({∅} × {𝐴}) | |
8 | cnvxp 5470 | . . 3 ⊢ ◡({𝐵} × {1𝑜}) = ({1𝑜} × {𝐵}) | |
9 | 7, 8 | uneq12i 3727 | . 2 ⊢ (◡({𝐴} × {∅}) ∪ ◡({𝐵} × {1𝑜})) = (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) |
10 | 5, 6, 9 | 3eqtri 2636 | 1 ⊢ ◡({𝐴} +𝑐 {𝐵}) = (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 ∈ wcel 1977 Vcvv 3173 ∪ cun 3538 ∅c0 3874 {csn 4125 × cxp 5036 ◡ccnv 5037 (class class class)co 6549 1𝑜c1o 7440 +𝑐 ccda 8872 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-iota 5768 df-fun 5806 df-fv 5812 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-cda 8873 |
This theorem is referenced by: xpscg 16041 xpsc0 16043 xpsc1 16044 xpsfrnel2 16048 |
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