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| Mirrors > Home > ILE Home > Th. List > txcnmpt | Unicode version | ||
| Description: A map into the product of two topological spaces is continuous if both of its projections are continuous. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 22-Aug-2015.) |
| Ref | Expression |
|---|---|
| txcnmpt.1 |
|
| txcnmpt.2 |
|
| Ref | Expression |
|---|---|
| txcnmpt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | txcnmpt.1 |
. . . . . . 7
| |
| 2 | eqid 2238 |
. . . . . . 7
| |
| 3 | 1, 2 | cnf 15430 |
. . . . . 6
|
| 4 | 3 | adantr 276 |
. . . . 5
|
| 5 | 4 | ffvelcdmda 5846 |
. . . 4
|
| 6 | eqid 2238 |
. . . . . . 7
| |
| 7 | 1, 6 | cnf 15430 |
. . . . . 6
|
| 8 | 7 | adantl 277 |
. . . . 5
|
| 9 | 8 | ffvelcdmda 5846 |
. . . 4
|
| 10 | 5, 9 | opelxpd 4809 |
. . 3
|
| 11 | txcnmpt.2 |
. . 3
| |
| 12 | 10, 11 | fmptd 5865 |
. 2
|
| 13 | 11 | mptpreima 5284 |
. . . . . 6
|
| 14 | 4 | adantr 276 |
. . . . . . . . . . . . 13
|
| 15 | 14 | adantr 276 |
. . . . . . . . . . . 12
|
| 16 | ffn 5536 |
. . . . . . . . . . . 12
| |
| 17 | elpreima 5831 |
. . . . . . . . . . . 12
| |
| 18 | 15, 16, 17 | 3syl 17 |
. . . . . . . . . . 11
|
| 19 | ibar 301 |
. . . . . . . . . . . 12
| |
| 20 | 19 | adantl 277 |
. . . . . . . . . . 11
|
| 21 | 18, 20 | bitr4d 191 |
. . . . . . . . . 10
|
| 22 | 8 | ad2antrr 492 |
. . . . . . . . . . . 12
|
| 23 | ffn 5536 |
. . . . . . . . . . . 12
| |
| 24 | elpreima 5831 |
. . . . . . . . . . . 12
| |
| 25 | 22, 23, 24 | 3syl 17 |
. . . . . . . . . . 11
|
| 26 | ibar 301 |
. . . . . . . . . . . 12
| |
| 27 | 26 | adantl 277 |
. . . . . . . . . . 11
|
| 28 | 25, 27 | bitr4d 191 |
. . . . . . . . . 10
|
| 29 | 21, 28 | anbi12d 477 |
. . . . . . . . 9
|
| 30 | elin 3412 |
. . . . . . . . 9
| |
| 31 | opelxp 4806 |
. . . . . . . . 9
| |
| 32 | 29, 30, 31 | 3bitr4g 223 |
. . . . . . . 8
|
| 33 | 32 | rabbi2dva 3439 |
. . . . . . 7
|
| 34 | inss1 3451 |
. . . . . . . . . 10
| |
| 35 | cnvimass 5153 |
. . . . . . . . . 10
| |
| 36 | 34, 35 | sstri 3257 |
. . . . . . . . 9
|
| 37 | 36, 14 | fssdm 5552 |
. . . . . . . 8
|
| 38 | sseqin2 3450 |
. . . . . . . 8
| |
| 39 | 37, 38 | sylib 122 |
. . . . . . 7
|
| 40 | 33, 39 | eqtr3d 2273 |
. . . . . 6
|
| 41 | 13, 40 | eqtrid 2283 |
. . . . 5
|
| 42 | cntop1 15427 |
. . . . . . . 8
| |
| 43 | 42 | adantl 277 |
. . . . . . 7
|
| 44 | 43 | adantr 276 |
. . . . . 6
|
| 45 | cnima 15446 |
. . . . . . 7
| |
| 46 | 45 | ad2ant2r 513 |
. . . . . 6
|
| 47 | cnima 15446 |
. . . . . . 7
| |
| 48 | 47 | ad2ant2l 512 |
. . . . . 6
|
| 49 | inopn 15229 |
. . . . . 6
| |
| 50 | 44, 46, 48, 49 | syl3anc 1278 |
. . . . 5
|
| 51 | 41, 50 | eqeltrd 2315 |
. . . 4
|
| 52 | 51 | ralrimivva 2632 |
. . 3
|
| 53 | vex 2824 |
. . . . . 6
| |
| 54 | vex 2824 |
. . . . . 6
| |
| 55 | 53, 54 | xpex 4893 |
. . . . 5
|
| 56 | 55 | rgen2w 2606 |
. . . 4
|
| 57 | eqid 2238 |
. . . . 5
| |
| 58 | imaeq2 5125 |
. . . . . 6
| |
| 59 | 58 | eleq1d 2307 |
. . . . 5
|
| 60 | 57, 59 | ralrnmpo 6206 |
. . . 4
|
| 61 | 56, 60 | ax-mp 5 |
. . 3
|
| 62 | 52, 61 | sylibr 134 |
. 2
|
| 63 | 1 | toptopon 15244 |
. . . 4
|
| 64 | 43, 63 | sylib 122 |
. . 3
|
| 65 | cntop2 15428 |
. . . 4
| |
| 66 | cntop2 15428 |
. . . 4
| |
| 67 | eqid 2238 |
. . . . 5
| |
| 68 | 67 | txval 15481 |
. . . 4
|
| 69 | 65, 66, 68 | syl2an 289 |
. . 3
|
| 70 | toptopon2 15245 |
. . . . 5
| |
| 71 | 65, 70 | sylib 122 |
. . . 4
|
| 72 | toptopon2 15245 |
. . . . 5
| |
| 73 | 66, 72 | sylib 122 |
. . . 4
|
| 74 | txtopon 15488 |
. . . 4
| |
| 75 | 71, 73, 74 | syl2an 289 |
. . 3
|
| 76 | 64, 69, 75 | tgcn 15434 |
. 2
|
| 77 | 12, 62, 76 | mpbir2and 957 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-map 6928 df-topgen 13673 df-top 15224 df-topon 15237 df-bases 15269 df-cn 15414 df-tx 15479 |
| This theorem is used by: uptx 15500 cnmpt1t 15511 cnmpt2t 15519 |
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