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| Mirrors > Home > ILE Home > Th. List > cncnp2m | Unicode version | ||
| Description: A continuous function is continuous at all points. Theorem 7.2(g) of [Munkres] p. 107. (Contributed by Raph Levien, 20-Nov-2006.) (Revised by Jim Kingdon, 30-Mar-2023.) |
| Ref | Expression |
|---|---|
| cncnp.1 |
|
| cncnp.2 |
|
| Ref | Expression |
|---|---|
| cncnp2m |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cntop1 14924 |
. . . . 5
| |
| 2 | cncnp.1 |
. . . . . 6
| |
| 3 | 2 | toptopon 14741 |
. . . . 5
|
| 4 | 1, 3 | sylib 122 |
. . . 4
|
| 5 | cntop2 14925 |
. . . . 5
| |
| 6 | cncnp.2 |
. . . . . 6
| |
| 7 | 6 | toptopon 14741 |
. . . . 5
|
| 8 | 5, 7 | sylib 122 |
. . . 4
|
| 9 | 2, 6 | cnf 14927 |
. . . 4
|
| 10 | 4, 8, 9 | jca31 309 |
. . 3
|
| 11 | 10 | adantl 277 |
. 2
|
| 12 | 3 | biimpi 120 |
. . . . 5
|
| 13 | 12 | 3ad2ant1 1044 |
. . . 4
|
| 14 | 13 | adantr 276 |
. . 3
|
| 15 | 7 | biimpi 120 |
. . . . 5
|
| 16 | 15 | 3ad2ant2 1045 |
. . . 4
|
| 17 | 16 | adantr 276 |
. . 3
|
| 18 | r19.2m 3581 |
. . . . . . 7
| |
| 19 | 18 | ex 115 |
. . . . . 6
|
| 20 | 19 | 3ad2ant3 1046 |
. . . . 5
|
| 21 | cnpf2 14930 |
. . . . . . . 8
| |
| 22 | 21 | 3expia 1231 |
. . . . . . 7
|
| 23 | 22 | rexlimdvw 2654 |
. . . . . 6
|
| 24 | 13, 16, 23 | syl2anc 411 |
. . . . 5
|
| 25 | 20, 24 | syld 45 |
. . . 4
|
| 26 | 25 | imp 124 |
. . 3
|
| 27 | 14, 17, 26 | jca31 309 |
. 2
|
| 28 | cncnp 14953 |
. . 3
| |
| 29 | 28 | baibd 930 |
. 2
|
| 30 | 11, 27, 29 | pm5.21nd 923 |
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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-map 6818 df-topgen 13342 df-top 14721 df-topon 14734 df-cn 14911 df-cnp 14912 |
| This theorem is referenced by: (None) |
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