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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 4835 |
. . 3
| |
| 2 | txuni2.1 |
. . . . . . . 8
| |
| 3 | 2 | eleq2i 2298 |
. . . . . . 7
|
| 4 | eluni2 3897 |
. . . . . . 7
| |
| 5 | 3, 4 | bitri 184 |
. . . . . 6
|
| 6 | txuni2.2 |
. . . . . . . 8
| |
| 7 | 6 | eleq2i 2298 |
. . . . . . 7
|
| 8 | eluni2 3897 |
. . . . . . 7
| |
| 9 | 7, 8 | bitri 184 |
. . . . . 6
|
| 10 | 5, 9 | anbi12i 460 |
. . . . 5
|
| 11 | opelxp 4755 |
. . . . 5
| |
| 12 | reeanv 2703 |
. . . . 5
| |
| 13 | 10, 11, 12 | 3bitr4i 212 |
. . . 4
|
| 14 | opelxp 4755 |
. . . . . 6
| |
| 15 | eqid 2231 |
. . . . . . . . . 10
| |
| 16 | xpeq1 4739 |
. . . . . . . . . . . 12
| |
| 17 | 16 | eqeq2d 2243 |
. . . . . . . . . . 11
|
| 18 | xpeq2 4740 |
. . . . . . . . . . . 12
| |
| 19 | 18 | eqeq2d 2243 |
. . . . . . . . . . 11
|
| 20 | 17, 19 | rspc2ev 2925 |
. . . . . . . . . 10
|
| 21 | 15, 20 | mp3an3 1362 |
. . . . . . . . 9
|
| 22 | vex 2805 |
. . . . . . . . . . 11
| |
| 23 | vex 2805 |
. . . . . . . . . . 11
| |
| 24 | 22, 23 | xpex 4842 |
. . . . . . . . . 10
|
| 25 | eqeq1 2238 |
. . . . . . . . . . 11
| |
| 26 | 25 | 2rexbidv 2557 |
. . . . . . . . . 10
|
| 27 | txval.1 |
. . . . . . . . . . 11
| |
| 28 | eqid 2231 |
. . . . . . . . . . . 12
| |
| 29 | 28 | rnmpo 6132 |
. . . . . . . . . . 11
|
| 30 | 27, 29 | eqtri 2252 |
. . . . . . . . . 10
|
| 31 | 24, 26, 30 | elab2 2954 |
. . . . . . . . 9
|
| 32 | 21, 31 | sylibr 134 |
. . . . . . . 8
|
| 33 | elssuni 3921 |
. . . . . . . 8
| |
| 34 | 32, 33 | syl 14 |
. . . . . . 7
|
| 35 | 34 | sseld 3226 |
. . . . . 6
|
| 36 | 14, 35 | biimtrrid 153 |
. . . . 5
|
| 37 | 36 | rexlimivv 2656 |
. . . 4
|
| 38 | 13, 37 | sylbi 121 |
. . 3
|
| 39 | 1, 38 | relssi 4817 |
. 2
|
| 40 | elssuni 3921 |
. . . . . . . . . 10
| |
| 41 | 40, 2 | sseqtrrdi 3276 |
. . . . . . . . 9
|
| 42 | elssuni 3921 |
. . . . . . . . . 10
| |
| 43 | 42, 6 | sseqtrrdi 3276 |
. . . . . . . . 9
|
| 44 | xpss12 4833 |
. . . . . . . . 9
| |
| 45 | 41, 43, 44 | syl2an 289 |
. . . . . . . 8
|
| 46 | vex 2805 |
. . . . . . . . . 10
| |
| 47 | vex 2805 |
. . . . . . . . . 10
| |
| 48 | 46, 47 | xpex 4842 |
. . . . . . . . 9
|
| 49 | 48 | elpw 3658 |
. . . . . . . 8
|
| 50 | 45, 49 | sylibr 134 |
. . . . . . 7
|
| 51 | 50 | rgen2 2618 |
. . . . . 6
|
| 52 | 28 | fmpo 6366 |
. . . . . 6
|
| 53 | 51, 52 | mpbi 145 |
. . . . 5
|
| 54 | frn 5491 |
. . . . 5
| |
| 55 | 53, 54 | ax-mp 5 |
. . . 4
|
| 56 | 27, 55 | eqsstri 3259 |
. . 3
|
| 57 | sspwuni 4055 |
. . 3
| |
| 58 | 56, 57 | mpbi 145 |
. 2
|
| 59 | 39, 58 | eqssi 3243 |
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 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-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 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-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 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-fv 5334 df-oprab 6022 df-mpo 6023 df-1st 6303 df-2nd 6304 |
| This theorem is referenced by: txbasex 14983 txtopon 14988 |
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