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| Description: Theorem 19.11 of [Margaris] p. 89. |
| Ref | Expression |
|---|---|
| excom |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | excomim 1077 |
. 2
| |
| 2 | excomim 1077 |
. 2
| |
| 3 | 1, 2 | impbii 155 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: excom13 1130 exrot3 1131 ee4anv 1358 2exsb 1384 2euex 1475 2exeu 1480 2eu1 1483 2eu4 1486 rexcom 1813 gencbvex 1876 sbccomglem 2030 dfiun2g 2635 iunn0 2657 opabid 2863 uniuni 2935 elvvv 3287 dmuni 3383 dm0rn0 3390 dmcoss 3423 dmcosseq 3425 rnuni 3515 rnco 3575 coass 3586 imaiun 3940 iinon 3986 dfoprab2 4067 domen 4466 xpcomen 4526 xpassen 4528 scott0 4803 aceq5lem1 4821 aceq5lem4 4824 cflem 4994 genpass 5201 addcompr 5212 mulcompr 5214 ltexprlem1 5231 ltexprlem4 5234 reclem1pr 5245 reclem2pr 5246 suplem1pr 5250 rcfpfillem3 10718 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 994 ax-gen 995 ax-4 1005 ax-5o 1007 ax-6o 1010 |
| This theorem depends on definitions: df-bi 145 df-an 223 df-ex 1013 |