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| Description: Existential uniqueness implies "at most one." |
| Ref | Expression |
|---|---|
| eumo |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eu5 1386 |
. 2
| |
| 2 | 1 | pm3.27bi 326 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eumoi 1389 euimmo 1397 moaneu 1407 eupick 1411 euor2 1414 2eumo 1419 2eu2 1427 2eu5 1430 moeq3 1893 euabex 2735 reuxfr 2867 dffun7 3481 zfrep6 3554 fnopabg 3555 dff2 3756 fnoprabg 3951 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-4 951 ax-5 952 ax-6 953 ax-7 954 ax-gen 955 ax-8 1101 ax-9 1102 ax-10 1103 ax-12 1104 ax-11 1180 ax-17 1190 ax-16 1194 ax-11o 1202 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 957 df-sb 1155 df-eu 1359 df-mo 1360 |