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Related theorems Unicode version |
| Description: The abstraction variables in a class abstraction of pairs are not free. |
| Ref | Expression |
|---|---|
| hbopab1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hbe1 709 |
. . 3
| |
| 2 | 1 | hbab 1096 |
. 2
|
| 3 | df-opab 2098 |
. . 3
| |
| 4 | 3 | eleq2i 1153 |
. 2
|
| 5 | 4 | bial 695 |
. 2
|
| 6 | 2, 4, 5 | 3imtr4 192 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: opabsb 2114 opelopabg 2115 ssopab2 2119 dmopab 2539 rnopab 2566 cnvopab 2632 funopab 2694 zfrep6 2744 fnopabg 2745 elrnopab 2884 fopab2 2891 abrexexlem2 2911 rdgsucopab 2984 rdgsucopabn 2985 frsucopab 2992 abianfplem 2999 dom2d 3307 pw2en 3348 mapxpen 3390 xpmapenlem1 3391 xpmapenlem4 3394 unbnn 3435 inf0 3457 trcl 3489 ac6lem 3575 om2uzsuc 4652 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-16 922 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-opab 2098 |