| Metamath Proof Explorer |
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Related theorems Unicode version |
| Description: The cross product of two singletons. |
| Ref | Expression |
|---|---|
| fsn.1 |
|
| fsn.2 |
|
| Ref | Expression |
|---|---|
| xpsn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fsn.2 |
. . 3
| |
| 2 | 1 | fconst 4602 |
. 2
|
| 3 | fsn.1 |
. . 3
| |
| 4 | 3, 1 | fsn 4807 |
. 2
|
| 5 | 2, 4 | mpbi 206 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fopabsn 4815 fpar 5085 grpsn 9340 ablsn 9433 ringsn 9490 on1el3 10412 zrdivrng 10418 bnj140 12472 ressn0 13829 bfp 16009 ismrer1 16024 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-ral 2109 df-reu 2111 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-br 3339 df-opab 3396 df-id 3586 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-rn 4005 df-fun 4008 df-fn 4009 df-f 4010 df-f1 4011 df-fo 4012 df-f1o 4013 |