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| Mirrors > Home > ILE Home > Th. List > cnnei | Unicode version | ||
| Description: Continuity in terms of neighborhoods. (Contributed by Thierry Arnoux, 3-Jan-2018.) |
| Ref | Expression |
|---|---|
| cnnei.x |
|
| cnnei.y |
|
| Ref | Expression |
|---|---|
| cnnei |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnnei.x |
. . . . . 6
| |
| 2 | 1 | toptopon 14338 |
. . . . 5
|
| 3 | cnnei.y |
. . . . . 6
| |
| 4 | 3 | toptopon 14338 |
. . . . 5
|
| 5 | 2, 4 | anbi12i 460 |
. . . 4
|
| 6 | cncnp 14550 |
. . . . 5
| |
| 7 | 6 | baibd 924 |
. . . 4
|
| 8 | 5, 7 | sylanb 284 |
. . 3
|
| 9 | 5 | anbi1i 458 |
. . . . 5
|
| 10 | iscnp4 14538 |
. . . . . . . 8
| |
| 11 | 10 | 3expa 1205 |
. . . . . . 7
|
| 12 | 11 | baibd 924 |
. . . . . 6
|
| 13 | 12 | an32s 568 |
. . . . 5
|
| 14 | 9, 13 | sylanb 284 |
. . . 4
|
| 15 | 14 | ralbidva 2493 |
. . 3
|
| 16 | 8, 15 | bitrd 188 |
. 2
|
| 17 | 16 | 3impa 1196 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-ov 5928 df-oprab 5929 df-mpo 5930 df-1st 6207 df-2nd 6208 df-map 6718 df-topgen 12962 df-top 14318 df-topon 14331 df-ntr 14416 df-nei 14459 df-cn 14508 df-cnp 14509 |
| This theorem is referenced by: (None) |
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