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| Description: Domain of closure of an operation. |
| Ref | Expression |
|---|---|
| oprssdm.1 |
|
| oprssdm.2 |
|
| Ref | Expression |
|---|---|
| oprssdm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relxp 3255 |
. 2
| |
| 2 | visset 1813 |
. . . 4
| |
| 3 | 2 | opelxp 3214 |
. . 3
|
| 4 | ndmfv 3745 |
. . . . 5
| |
| 5 | df-opr 3965 |
. . . . . . 7
| |
| 6 | 5 | eqeq1i 1482 |
. . . . . 6
|
| 7 | oprssdm.1 |
. . . . . . . 8
| |
| 8 | eleq1 1534 |
. . . . . . . 8
| |
| 9 | 7, 8 | mtbiri 717 |
. . . . . . 7
|
| 10 | oprssdm.2 |
. . . . . . 7
| |
| 11 | 9, 10 | nsyl 116 |
. . . . . 6
|
| 12 | 6, 11 | sylbir 201 |
. . . . 5
|
| 13 | 4, 12 | syl 10 |
. . . 4
|
| 14 | 13 | a3i 74 |
. . 3
|
| 15 | 3, 14 | sylbi 199 |
. 2
|
| 16 | 1, 15 | relssi 3248 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dmaddpq 5059 dmmulpq 5061 dmaddsr 5194 dmmulsr 5195 axaddopr 5265 axmulopr 5266 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-xp 3184 df-rel 3185 df-cnv 3186 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fv 3198 df-opr 3965 |