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| Mirrors > Home > ILE Home > Th. List > cntop1 | Unicode version | ||
| Description: Reverse closure for a continuous function. (Contributed by Mario Carneiro, 21-Aug-2015.) |
| Ref | Expression |
|---|---|
| cntop1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2205 |
. . . 4
| |
| 2 | eqid 2205 |
. . . 4
| |
| 3 | 1, 2 | iscn2 14705 |
. . 3
|
| 4 | 3 | simplbi 274 |
. 2
|
| 5 | 4 | simpld 112 |
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 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-13 2178 ax-14 2179 ax-ext 2187 ax-sep 4163 ax-pow 4219 ax-pr 4254 ax-un 4481 ax-setind 4586 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1484 df-sb 1786 df-eu 2057 df-mo 2058 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ne 2377 df-ral 2489 df-rex 2490 df-rab 2493 df-v 2774 df-sbc 2999 df-csb 3094 df-dif 3168 df-un 3170 df-in 3172 df-ss 3179 df-pw 3618 df-sn 3639 df-pr 3640 df-op 3642 df-uni 3851 df-iun 3929 df-br 4046 df-opab 4107 df-mpt 4108 df-id 4341 df-xp 4682 df-rel 4683 df-cnv 4684 df-co 4685 df-dm 4686 df-rn 4687 df-res 4688 df-ima 4689 df-iota 5233 df-fun 5274 df-fn 5275 df-f 5276 df-fv 5280 df-ov 5949 df-oprab 5950 df-mpo 5951 df-1st 6228 df-2nd 6229 df-map 6739 df-top 14503 df-topon 14516 df-cn 14693 |
| This theorem is referenced by: cnco 14726 cnclima 14728 cnntri 14729 cnss2 14732 cncnpi 14733 cncnp2m 14736 cnrest 14740 cnrest2 14741 cnrest2r 14742 lmcn 14756 txcnmpt 14778 uptx 14779 txcn 14780 cnmpt21f 14797 hmeof1o 14814 hmeores 14820 txhmeo 14824 |
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