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Mirrors > Home > MPE Home > Th. List > Mathboxes > brcart | Structured version Visualization version GIF version |
Description: Binary relationship form of the cartesian product operator. (Contributed by Scott Fenton, 11-Apr-2014.) (Revised by Mario Carneiro, 19-Apr-2014.) |
Ref | Expression |
---|---|
brcart.1 | ⊢ 𝐴 ∈ V |
brcart.2 | ⊢ 𝐵 ∈ V |
brcart.3 | ⊢ 𝐶 ∈ V |
Ref | Expression |
---|---|
brcart | ⊢ (〈𝐴, 𝐵〉Cart𝐶 ↔ 𝐶 = (𝐴 × 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opex 4859 | . 2 ⊢ 〈𝐴, 𝐵〉 ∈ V | |
2 | brcart.3 | . 2 ⊢ 𝐶 ∈ V | |
3 | df-cart 31141 | . 2 ⊢ Cart = (((V × V) × V) ∖ ran ((V ⊗ E ) △ (pprod( E , E ) ⊗ V))) | |
4 | brcart.1 | . . . 4 ⊢ 𝐴 ∈ V | |
5 | brcart.2 | . . . 4 ⊢ 𝐵 ∈ V | |
6 | 4, 5 | opelvv 5088 | . . 3 ⊢ 〈𝐴, 𝐵〉 ∈ (V × V) |
7 | brxp 5071 | . . 3 ⊢ (〈𝐴, 𝐵〉((V × V) × V)𝐶 ↔ (〈𝐴, 𝐵〉 ∈ (V × V) ∧ 𝐶 ∈ V)) | |
8 | 6, 2, 7 | mpbir2an 957 | . 2 ⊢ 〈𝐴, 𝐵〉((V × V) × V)𝐶 |
9 | 3anass 1035 | . . . . 5 ⊢ ((𝑥 = 〈𝑦, 𝑧〉 ∧ 𝑦 E 𝐴 ∧ 𝑧 E 𝐵) ↔ (𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 E 𝐴 ∧ 𝑧 E 𝐵))) | |
10 | 4 | epelc 4951 | . . . . . . 7 ⊢ (𝑦 E 𝐴 ↔ 𝑦 ∈ 𝐴) |
11 | 5 | epelc 4951 | . . . . . . 7 ⊢ (𝑧 E 𝐵 ↔ 𝑧 ∈ 𝐵) |
12 | 10, 11 | anbi12i 729 | . . . . . 6 ⊢ ((𝑦 E 𝐴 ∧ 𝑧 E 𝐵) ↔ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵)) |
13 | 12 | anbi2i 726 | . . . . 5 ⊢ ((𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 E 𝐴 ∧ 𝑧 E 𝐵)) ↔ (𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵))) |
14 | 9, 13 | bitri 263 | . . . 4 ⊢ ((𝑥 = 〈𝑦, 𝑧〉 ∧ 𝑦 E 𝐴 ∧ 𝑧 E 𝐵) ↔ (𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵))) |
15 | 14 | 2exbii 1765 | . . 3 ⊢ (∃𝑦∃𝑧(𝑥 = 〈𝑦, 𝑧〉 ∧ 𝑦 E 𝐴 ∧ 𝑧 E 𝐵) ↔ ∃𝑦∃𝑧(𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵))) |
16 | vex 3176 | . . . 4 ⊢ 𝑥 ∈ V | |
17 | 16, 4, 5 | brpprod3b 31164 | . . 3 ⊢ (𝑥pprod( E , E )〈𝐴, 𝐵〉 ↔ ∃𝑦∃𝑧(𝑥 = 〈𝑦, 𝑧〉 ∧ 𝑦 E 𝐴 ∧ 𝑧 E 𝐵)) |
18 | elxp 5055 | . . 3 ⊢ (𝑥 ∈ (𝐴 × 𝐵) ↔ ∃𝑦∃𝑧(𝑥 = 〈𝑦, 𝑧〉 ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵))) | |
19 | 15, 17, 18 | 3bitr4ri 292 | . 2 ⊢ (𝑥 ∈ (𝐴 × 𝐵) ↔ 𝑥pprod( E , E )〈𝐴, 𝐵〉) |
20 | 1, 2, 3, 8, 19 | brtxpsd3 31173 | 1 ⊢ (〈𝐴, 𝐵〉Cart𝐶 ↔ 𝐶 = (𝐴 × 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 ∧ wa 383 ∧ w3a 1031 = wceq 1475 ∃wex 1695 ∈ wcel 1977 Vcvv 3173 〈cop 4131 class class class wbr 4583 E cep 4947 × cxp 5036 pprodcpprod 31107 Cartccart 31117 |
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-ne 2782 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-symdif 3806 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-eprel 4949 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-fo 5810 df-fv 5812 df-1st 7059 df-2nd 7060 df-txp 31130 df-pprod 31131 df-cart 31141 |
This theorem is referenced by: brimg 31214 brrestrict 31226 |
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