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Related theorems Unicode version |
| Description: Alternate definition for the class of all metric spaces (replaces old version of df-ms 7733). |
| Ref | Expression |
|---|---|
| dfms2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ms 7733 |
. 2
| |
| 2 | xpeq1 3190 |
. . . . . . . 8
| |
| 3 | xpeq2 3191 |
. . . . . . . 8
| |
| 4 | 2, 3 | eqtrd 1499 |
. . . . . . 7
|
| 5 | feq2 3607 |
. . . . . . 7
| |
| 6 | 4, 5 | syl 10 |
. . . . . 6
|
| 7 | raleq1 1778 |
. . . . . . . . 9
| |
| 8 | 7 | anbi2d 614 |
. . . . . . . 8
|
| 9 | 8 | raleqd 1783 |
. . . . . . 7
|
| 10 | 9 | raleqd 1783 |
. . . . . 6
|
| 11 | 6, 10 | anbi12d 626 |
. . . . 5
|
| 12 | 11 | pm5.32ri 644 |
. . . 4
|
| 13 | fdm 3617 |
. . . . . . 7
| |
| 14 | dmeq 3300 |
. . . . . . 7
| |
| 15 | dmxpid 3322 |
. . . . . . . . . 10
| |
| 16 | 15 | eqeq2i 1477 |
. . . . . . . . 9
|
| 17 | 16 | biimp 151 |
. . . . . . . 8
|
| 18 | 17 | eqcomd 1472 |
. . . . . . 7
|
| 19 | 13, 14, 18 | 3syl 20 |
. . . . . 6
|
| 20 | 19 | adantr 389 |
. . . . 5
|
| 21 | 20 | pm4.71i 635 |
. . . 4
|
| 22 | visset 1804 |
. . . . . 6
| |
| 23 | eqid 1468 |
. . . . . . 7
| |
| 24 | 23 | ismet 7737 |
. . . . . 6
|
| 25 | 22, 24 | ax-mp 7 |
. . . . 5
|
| 26 | 25 | anbi1i 480 |
. . . 4
|
| 27 | 12, 21, 26 | 3bitr4r 184 |
. . 3
|
| 28 | 27 | opabbii 2661 |
. 2
|
| 29 | 1, 28 | eqtr 1487 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ismsg 7739 msflem 7742 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-br 2610 df-opab 2657 df-id 2824 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fn 3183 df-f 3184 df-fv 3188 df-opr 3950 df-met 7732 df-ms 7733 |