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| Description: The domain of a square cross product. |
| Ref | Expression |
|---|---|
| dmxpid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dm0 3329 |
. . 3
| |
| 2 | xpeq1 3206 |
. . . . 5
| |
| 3 | xp0r 3245 |
. . . . 5
| |
| 4 | 2, 3 | syl6eq 1526 |
. . . 4
|
| 5 | 4 | dmeqd 3319 |
. . 3
|
| 6 | id 59 |
. . 3
| |
| 7 | 1, 5, 6 | 3eqtr4a 1535 |
. 2
|
| 8 | dmxp 3338 |
. 2
| |
| 9 | 7, 8 | pm2.61ine 1637 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dmxpin 3340 xpid11 3341 ecopoprdm 4315 ismet 7795 dfms2 7796 ismeti 7799 metreslem 7819 cnmetba 7900 cncfmet 7902 remetba 7906 xplmi 7970 xplmi2 7971 xplm 7972 xpcn 7973 oprcn 7974 bopcnlem3 7980 bopcn 7982 grprndm 8051 vcoprne 8194 imsba 8317 dfhnorm2 8983 hhshsslem1 9132 dmhmph 10518 reldded 10645 reldcat 10666 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-pow 2748 ax-pr 2785 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-br 2625 df-opab 2672 df-xp 3190 df-dm 3194 |