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Related theorems Unicode version |
| Description: Move class substitution in and out of a function value. |
| Ref | Expression |
|---|---|
| csbfv12g |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 1190 |
. . . 4
| |
| 2 | ax-17 1190 |
. . . . 5
| |
| 3 | 2 | hbcsb1g 1995 |
. . . 4
|
| 4 | 2 | hbcsb1g 1995 |
. . . 4
|
| 5 | 1, 3, 4 | hbfvd 3669 |
. . 3
|
| 6 | a9e 1112 |
. . . . . 6
| |
| 7 | visset 1788 |
. . . . . . . . 9
| |
| 8 | ax-17 1190 |
. . . . . . . . 9
| |
| 9 | 7, 8 | hbcsb1 1996 |
. . . . . . . 8
|
| 10 | 7, 8 | hbcsb1 1996 |
. . . . . . . . 9
|
| 11 | 7, 8 | hbcsb1 1996 |
. . . . . . . . 9
|
| 12 | 10, 11 | hbfv 3668 |
. . . . . . . 8
|
| 13 | 9, 12 | hbeq 1541 |
. . . . . . 7
|
| 14 | csbeq1a 1977 |
. . . . . . . . 9
| |
| 15 | 14 | fveq1d 3665 |
. . . . . . . 8
|
| 16 | csbeq1a 1977 |
. . . . . . . 8
| |
| 17 | csbeq1a 1977 |
. . . . . . . . 9
| |
| 18 | 17 | fveq2d 3667 |
. . . . . . . 8
|
| 19 | 15, 16, 18 | 3eqtr3d 1491 |
. . . . . . 7
|
| 20 | 13, 19 | 19.23ai 1040 |
. . . . . 6
|
| 21 | 6, 20 | ax-mp 7 |
. . . . 5
|
| 22 | 21 | a1i 8 |
. . . 4
|
| 23 | csbeq1a 1977 |
. . . . 5
| |
| 24 | 23 | fveq1d 3665 |
. . . 4
|
| 25 | csbeq1a 1977 |
. . . . 5
| |
| 26 | 25 | fveq2d 3667 |
. . . 4
|
| 27 | 22, 24, 26 | 3eqtrd 1487 |
. . 3
|
| 28 | 5, 27 | csbiegf 2002 |
. 2
|
| 29 | csbcog 1978 |
. 2
| |
| 30 | csbcog 1978 |
. . . 4
| |
| 31 | 30 | fveq1d 3665 |
. . 3
|
| 32 | csbcog 1978 |
. . . 4
| |
| 33 | 32 | fveq2d 3667 |
. . 3
|
| 34 | 31, 33 | eqtrd 1483 |
. 2
|
| 35 | 28, 29, 34 | 3eqtr3d 1491 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: csbfv2g 3682 fsumcnlem 7871 |
| 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-13 1107 ax-14 1108 ax-11 1180 ax-17 1190 ax-16 1194 ax-11o 1202 ax-ext 1436 ax-sep 2671 ax-nul 2678 ax-pow 2710 ax-pr 2747 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 774 df-ex 957 df-sb 1155 df-eu 1359 df-mo 1360 df-clab 1441 df-cleq 1446 df-clel 1449 df-ne 1563 df-rex 1626 df-v 1787 df-sbc 1913 df-csb 1973 df-dif 2020 df-un 2021 df-in 2022 df-ss 2024 df-nul 2252 df-pw 2373 df-sn 2383 df-pr 2384 df-op 2387 df-uni 2472 df-br 2588 df-opab 2635 df-xp 3147 df-cnv 3149 df-dm 3151 df-rn 3152 df-res 3153 df-ima 3154 df-fv 3161 |