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Related theorems Unicode version |
| Description: Interchange class substitution and restricted quantifier. |
| Ref | Expression |
|---|---|
| sbcralg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elisset 1792 |
. 2
| |
| 2 | ax-17 1190 |
. . . 4
| |
| 3 | 2 | ax-gen 955 |
. . 3
|
| 4 | ax-17 1190 |
. . . . 5
| |
| 5 | 3 | hbth 977 |
. . . . 5
|
| 6 | 4, 5 | hban 985 |
. . . 4
|
| 7 | sbcralt 1961 |
. . . 4
| |
| 8 | 6, 7 | syl 10 |
. . 3
|
| 9 | 3, 8 | mpan2 693 |
. 2
|
| 10 | 1, 9 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: csbfsum 6916 |
| 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 ax-ext 1436 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 957 df-sb 1155 df-clab 1441 df-cleq 1446 df-clel 1449 df-ral 1625 df-v 1787 df-sbc 1913 |