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Related theorems Unicode version |
| Description: Subset implication for an indexed intersection. |
| Ref | Expression |
|---|---|
| iinss |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 19.12 1023 |
. . . 4
| |
| 2 | df-rex 1626 |
. . . . 5
| |
| 3 | 19.28v 1281 |
. . . . . 6
| |
| 4 | 3 | exbii 1027 |
. . . . 5
|
| 5 | 2, 4 | bitr4 176 |
. . . 4
|
| 6 | df-rex 1626 |
. . . . 5
| |
| 7 | 6 | albii 975 |
. . . 4
|
| 8 | 1, 5, 7 | 3imtr4 219 |
. . 3
|
| 9 | r19.36av 1736 |
. . . . 5
| |
| 10 | visset 1788 |
. . . . . 6
| |
| 11 | eliin 2539 |
. . . . . 6
| |
| 12 | 10, 11 | ax-mp 7 |
. . . . 5
|
| 13 | 9, 12 | syl5ib 206 |
. . . 4
|
| 14 | 13 | 19.20i 968 |
. . 3
|
| 15 | 8, 14 | syl 10 |
. 2
|
| 16 | dfss2 2029 |
. . 3
| |
| 17 | 16 | rexbii 1644 |
. 2
|
| 18 | dfss2 2029 |
. 2
| |
| 19 | 15, 17, 18 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: scott0 4641 iintlem2 8827 |
| 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-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-rex 1626 df-v 1787 df-in 2022 df-ss 2024 df-iin 2537 |