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| Mirrors > Home > ILE Home > Th. List > txuni2 | Unicode version | ||
| Description: The underlying set of the product of two topologies. (Contributed by Mario Carneiro, 31-Aug-2015.) |
| Ref | Expression |
|---|---|
| txval.1 |
|
| txuni2.1 |
|
| txuni2.2 |
|
| Ref | Expression |
|---|---|
| txuni2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relxp 4861 |
. . 3
| |
| 2 | txuni2.1 |
. . . . . . . 8
| |
| 3 | 2 | eleq2i 2301 |
. . . . . . 7
|
| 4 | eluni2 3920 |
. . . . . . 7
| |
| 5 | 3, 4 | bitri 184 |
. . . . . 6
|
| 6 | txuni2.2 |
. . . . . . . 8
| |
| 7 | 6 | eleq2i 2301 |
. . . . . . 7
|
| 8 | eluni2 3920 |
. . . . . . 7
| |
| 9 | 7, 8 | bitri 184 |
. . . . . 6
|
| 10 | 5, 9 | anbi12i 460 |
. . . . 5
|
| 11 | opelxp 4781 |
. . . . 5
| |
| 12 | reeanv 2715 |
. . . . 5
| |
| 13 | 10, 11, 12 | 3bitr4i 212 |
. . . 4
|
| 14 | opelxp 4781 |
. . . . . 6
| |
| 15 | eqid 2234 |
. . . . . . . . . 10
| |
| 16 | xpeq1 4765 |
. . . . . . . . . . . 12
| |
| 17 | 16 | eqeq2d 2246 |
. . . . . . . . . . 11
|
| 18 | xpeq2 4766 |
. . . . . . . . . . . 12
| |
| 19 | 18 | eqeq2d 2246 |
. . . . . . . . . . 11
|
| 20 | 17, 19 | rspc2ev 2938 |
. . . . . . . . . 10
|
| 21 | 15, 20 | mp3an3 1363 |
. . . . . . . . 9
|
| 22 | vex 2818 |
. . . . . . . . . . 11
| |
| 23 | vex 2818 |
. . . . . . . . . . 11
| |
| 24 | 22, 23 | xpex 4868 |
. . . . . . . . . 10
|
| 25 | eqeq1 2241 |
. . . . . . . . . . 11
| |
| 26 | 25 | 2rexbidv 2569 |
. . . . . . . . . 10
|
| 27 | txval.1 |
. . . . . . . . . . 11
| |
| 28 | eqid 2234 |
. . . . . . . . . . . 12
| |
| 29 | 28 | rnmpo 6166 |
. . . . . . . . . . 11
|
| 30 | 27, 29 | eqtri 2255 |
. . . . . . . . . 10
|
| 31 | 24, 26, 30 | elab2 2967 |
. . . . . . . . 9
|
| 32 | 21, 31 | sylibr 134 |
. . . . . . . 8
|
| 33 | elssuni 3944 |
. . . . . . . 8
| |
| 34 | 32, 33 | syl 14 |
. . . . . . 7
|
| 35 | 34 | sseld 3239 |
. . . . . 6
|
| 36 | 14, 35 | biimtrrid 153 |
. . . . 5
|
| 37 | 36 | rexlimivv 2668 |
. . . 4
|
| 38 | 13, 37 | sylbi 121 |
. . 3
|
| 39 | 1, 38 | relssi 4843 |
. 2
|
| 40 | elssuni 3944 |
. . . . . . . . . 10
| |
| 41 | 40, 2 | sseqtrrdi 3289 |
. . . . . . . . 9
|
| 42 | elssuni 3944 |
. . . . . . . . . 10
| |
| 43 | 42, 6 | sseqtrrdi 3289 |
. . . . . . . . 9
|
| 44 | xpss12 4859 |
. . . . . . . . 9
| |
| 45 | 41, 43, 44 | syl2an 289 |
. . . . . . . 8
|
| 46 | vex 2818 |
. . . . . . . . . 10
| |
| 47 | vex 2818 |
. . . . . . . . . 10
| |
| 48 | 46, 47 | xpex 4868 |
. . . . . . . . 9
|
| 49 | 48 | elpw 3677 |
. . . . . . . 8
|
| 50 | 45, 49 | sylibr 134 |
. . . . . . 7
|
| 51 | 50 | rgen2 2630 |
. . . . . 6
|
| 52 | 28 | fmpo 6399 |
. . . . . 6
|
| 53 | 51, 52 | mpbi 145 |
. . . . 5
|
| 54 | frn 5519 |
. . . . 5
| |
| 55 | 53, 54 | ax-mp 5 |
. . . 4
|
| 56 | 27, 55 | eqsstri 3272 |
. . 3
|
| 57 | sspwuni 4078 |
. . 3
| |
| 58 | 56, 57 | mpbi 145 |
. 2
|
| 59 | 39, 58 | eqssi 3256 |
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-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-fv 5362 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 |
| This theorem is referenced by: txbasex 15139 txtopon 15144 |
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