![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > xpsng | Structured version Visualization version GIF version |
Description: The Cartesian product of two singletons is the singleton consisting in the associated ordered pair. (Contributed by Mario Carneiro, 30-Apr-2015.) |
Ref | Expression |
---|---|
xpsng | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ({𝐴} × {𝐵}) = {〈𝐴, 𝐵〉}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fconstg 6769 | . . 3 ⊢ (𝐵 ∈ 𝑊 → ({𝐴} × {𝐵}):{𝐴}⟶{𝐵}) | |
2 | 1 | adantl 481 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ({𝐴} × {𝐵}):{𝐴}⟶{𝐵}) |
3 | fsng 7128 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (({𝐴} × {𝐵}):{𝐴}⟶{𝐵} ↔ ({𝐴} × {𝐵}) = {〈𝐴, 𝐵〉})) | |
4 | 2, 3 | mpbid 231 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ({𝐴} × {𝐵}) = {〈𝐴, 𝐵〉}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1533 ∈ wcel 2098 {csn 4621 〈cop 4627 × cxp 5665 ⟶wf 6530 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-sep 5290 ax-nul 5297 ax-pr 5418 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-ral 3054 df-rex 3063 df-reu 3369 df-rab 3425 df-v 3468 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-nul 4316 df-if 4522 df-sn 4622 df-pr 4624 df-op 4628 df-br 5140 df-opab 5202 df-mpt 5223 df-id 5565 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 |
This theorem is referenced by: xpprsng 7131 xpsn 7132 f1o2sn 7133 residpr 7134 fmptsn 7158 f1ofvswap 7297 mposn 8084 repsw1 14731 s1co 14782 intopsn 18579 grp1inv 18968 psgnsn 19432 ixpsnbasval 21056 mat1dimelbas 22297 mat1dimscm 22301 mat1dimmul 22302 mat1f1o 22304 m1detdiag 22423 pt1hmeo 23634 nosupbnd2lem1 27567 cosnop 32389 cshw1s2 32594 rngosn3 37286 fmptsnxp 44378 lmod1zr 47387 |
Copyright terms: Public domain | W3C validator |