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| Description: Composition of restricted identity and a mapping. |
| Ref | Expression |
|---|---|
| fcoi2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | visset 1811 |
. . . . . . . 8
| |
| 2 | 1 | opelf 3637 |
. . . . . . 7
|
| 3 | 2 | pm3.27d 325 |
. . . . . 6
|
| 4 | 3 | ex 373 |
. . . . 5
|
| 5 | pm4.71 634 |
. . . . 5
| |
| 6 | 4, 5 | sylib 198 |
. . . 4
|
| 7 | visset 1811 |
. . . . . 6
| |
| 8 | opelcog 3287 |
. . . . . 6
| |
| 9 | 7, 1, 8 | mp2an 696 |
. . . . 5
|
| 10 | 1 | opelres 3369 |
. . . . . . . . 9
|
| 11 | df-br 2617 |
. . . . . . . . . . 11
| |
| 12 | 1 | ideq 3274 |
. . . . . . . . . . 11
|
| 13 | 11, 12 | bitr3 175 |
. . . . . . . . . 10
|
| 14 | 13 | anbi1i 481 |
. . . . . . . . 9
|
| 15 | 10, 14 | bitr 173 |
. . . . . . . 8
|
| 16 | 15 | anbi2i 480 |
. . . . . . 7
|
| 17 | an12 484 |
. . . . . . 7
| |
| 18 | 16, 17 | bitr 173 |
. . . . . 6
|
| 19 | 18 | exbii 1050 |
. . . . 5
|
| 20 | opeq2 2486 |
. . . . . . . 8
| |
| 21 | 20 | eleq1d 1539 |
. . . . . . 7
|
| 22 | eleq1 1533 |
. . . . . . 7
| |
| 23 | 21, 22 | anbi12d 627 |
. . . . . 6
|
| 24 | 1, 23 | ceqsexv 1833 |
. . . . 5
|
| 25 | 9, 19, 24 | 3bitr 177 |
. . . 4
|
| 26 | 6, 25 | syl6rbbr 538 |
. . 3
|
| 27 | 26 | 19.21aivv 1287 |
. 2
|
| 28 | frel 3627 |
. . 3
| |
| 29 | relco 3481 |
. . . 4
| |
| 30 | eqrel 3247 |
. . . 4
| |
| 31 | 29, 30 | mpan 694 |
. . 3
|
| 32 | 28, 31 | syl 10 |
. 2
|
| 33 | 27, 32 | mpbird 196 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mapenlem2 4483 hoico2t 9674 symggrpi 10397 symgidi 10398 hmeogrp 10519 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-10 965 ax-11 966 ax-12 967 ax-13 968 ax-14 969 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2700 ax-pow 2739 ax-pr 2776 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 980 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1586 df-v 1810 df-dif 2047 df-un 2048 df-in 2049 df-ss 2051 df-nul 2279 df-pw 2400 df-sn 2410 df-pr 2411 df-op 2414 df-br 2617 df-opab 2664 df-id 2832 df-xp 3181 df-rel 3182 df-cnv 3183 df-co 3184 df-dm 3185 df-rn 3186 df-res 3187 df-fun 3189 df-fn 3190 df-f 3191 |