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Related theorems Unicode version |
| Description: Alternate definition for the class of all metric spaces (replaces old version of df-ms 7773). |
| Ref | Expression |
|---|---|
| dfms2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ms 7773 |
. 2
| |
| 2 | xpeq1 3197 |
. . . . . . . 8
| |
| 3 | xpeq2 3198 |
. . . . . . . 8
| |
| 4 | 2, 3 | eqtrd 1506 |
. . . . . . 7
|
| 5 | feq2 3618 |
. . . . . . 7
| |
| 6 | 4, 5 | syl 10 |
. . . . . 6
|
| 7 | raleq1 1785 |
. . . . . . . . 9
| |
| 8 | 7 | anbi2d 615 |
. . . . . . . 8
|
| 9 | 8 | raleqd 1790 |
. . . . . . 7
|
| 10 | 9 | raleqd 1790 |
. . . . . 6
|
| 11 | 6, 10 | anbi12d 627 |
. . . . 5
|
| 12 | 11 | pm5.32ri 645 |
. . . 4
|
| 13 | fdm 3628 |
. . . . . . 7
| |
| 14 | dmeq 3308 |
. . . . . . 7
| |
| 15 | dmxpid 3330 |
. . . . . . . . . 10
| |
| 16 | 15 | eqeq2i 1484 |
. . . . . . . . 9
|
| 17 | 16 | biimp 151 |
. . . . . . . 8
|
| 18 | 17 | eqcomd 1479 |
. . . . . . 7
|
| 19 | 13, 14, 18 | 3syl 20 |
. . . . . 6
|
| 20 | 19 | adantr 389 |
. . . . 5
|
| 21 | 20 | pm4.71i 636 |
. . . 4
|
| 22 | visset 1811 |
. . . . . 6
| |
| 23 | eqid 1475 |
. . . . . . 7
| |
| 24 | 23 | ismet 7777 |
. . . . . 6
|
| 25 | 22, 24 | ax-mp 7 |
. . . . 5
|
| 26 | 25 | anbi1i 481 |
. . . 4
|
| 27 | 12, 21, 26 | 3bitr4r 184 |
. . 3
|
| 28 | 27 | opabbii 2668 |
. 2
|
| 29 | 1, 28 | eqtr 1494 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ismsg 7779 msflem 7782 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-9 964 ax-10 965 ax-11 966 ax-12 967 ax-13 968 ax-14 969 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2700 ax-pow 2739 ax-pr 2776 ax-un 2863 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 980 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1586 df-ral 1648 df-v 1810 df-dif 2047 df-un 2048 df-in 2049 df-ss 2051 df-nul 2279 df-pw 2400 df-sn 2410 df-pr 2411 df-op 2414 df-uni 2501 df-br 2617 df-opab 2664 df-id 2832 df-xp 3181 df-rel 3182 df-cnv 3183 df-co 3184 df-dm 3185 df-rn 3186 df-res 3187 df-ima 3188 df-fun 3189 df-fn 3190 df-f 3191 df-fv 3195 df-opr 3962 df-met 7772 df-ms 7773 |