| Mathbox for Frédéric Liné |
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Related theorems Unicode version |
| Description: The field of a relation is a set. |
| Ref | Expression |
|---|---|
| fldrels.1 |
|
| Ref | Expression |
|---|---|
| fldrels |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uniexg 3795 |
. 2
| |
| 2 | uniexg 3795 |
. 2
| |
| 3 | fldrels.1 |
. . . . 5
| |
| 4 | 3 | eqcomi 1888 |
. . . 4
|
| 5 | 4 | eleq1i 1960 |
. . 3
|
| 6 | 5 | biimpi 168 |
. 2
|
| 7 | 1, 2, 6 | 3syl 24 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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-13 1311 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-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-rex 2110 df-v 2294 df-uni 3178 |