Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > xpscg | 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 |
---|---|
xpscg | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ◡({𝐴} +𝑐 {𝐵}) = {〈∅, 𝐴〉, 〈1𝑜, 𝐵〉}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0ex 4718 | . . . 4 ⊢ ∅ ∈ V | |
2 | xpsng 6312 | . . . 4 ⊢ ((∅ ∈ V ∧ 𝐴 ∈ 𝑉) → ({∅} × {𝐴}) = {〈∅, 𝐴〉}) | |
3 | 1, 2 | mpan 702 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ({∅} × {𝐴}) = {〈∅, 𝐴〉}) |
4 | 1on 7454 | . . . 4 ⊢ 1𝑜 ∈ On | |
5 | xpsng 6312 | . . . 4 ⊢ ((1𝑜 ∈ On ∧ 𝐵 ∈ 𝑊) → ({1𝑜} × {𝐵}) = {〈1𝑜, 𝐵〉}) | |
6 | 4, 5 | mpan 702 | . . 3 ⊢ (𝐵 ∈ 𝑊 → ({1𝑜} × {𝐵}) = {〈1𝑜, 𝐵〉}) |
7 | uneq12 3724 | . . 3 ⊢ ((({∅} × {𝐴}) = {〈∅, 𝐴〉} ∧ ({1𝑜} × {𝐵}) = {〈1𝑜, 𝐵〉}) → (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) = ({〈∅, 𝐴〉} ∪ {〈1𝑜, 𝐵〉})) | |
8 | 3, 6, 7 | syl2an 493 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) = ({〈∅, 𝐴〉} ∪ {〈1𝑜, 𝐵〉})) |
9 | xpsc 16040 | . 2 ⊢ ◡({𝐴} +𝑐 {𝐵}) = (({∅} × {𝐴}) ∪ ({1𝑜} × {𝐵})) | |
10 | df-pr 4128 | . 2 ⊢ {〈∅, 𝐴〉, 〈1𝑜, 𝐵〉} = ({〈∅, 𝐴〉} ∪ {〈1𝑜, 𝐵〉}) | |
11 | 8, 9, 10 | 3eqtr4g 2669 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ◡({𝐴} +𝑐 {𝐵}) = {〈∅, 𝐴〉, 〈1𝑜, 𝐵〉}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 Vcvv 3173 ∪ cun 3538 ∅c0 3874 {csn 4125 {cpr 4127 〈cop 4131 × cxp 5036 ◡ccnv 5037 Oncon0 5640 (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-3or 1032 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-ne 2782 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-ord 5643 df-on 5644 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-1o 7447 df-cda 8873 |
This theorem is referenced by: xpscfn 16042 xpstopnlem1 21422 |
Copyright terms: Public domain | W3C validator |