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Related theorems Unicode version |
| Description: The union of an infinite Cartesian product is included in a cross product. |
| Ref | Expression |
|---|---|
| uniixp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluni 2496 |
. . . 4
| |
| 2 | ixpf 4340 |
. . . . . 6
| |
| 3 | 2 | anim2i 335 |
. . . . 5
|
| 4 | 3 | 19.22i 1036 |
. . . 4
|
| 5 | 1, 4 | sylbi 199 |
. . 3
|
| 6 | fssxp 3622 |
. . . . . 6
| |
| 7 | 6 | sseld 2057 |
. . . . 5
|
| 8 | 7 | impcom 351 |
. . . 4
|
| 9 | 8 | 19.23aiv 1290 |
. . 3
|
| 10 | 5, 9 | syl 10 |
. 2
|
| 11 | 10 | ssriv 2059 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ixpexg 4342 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-iun 2558 df-br 2610 df-opab 2657 df-id 2824 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fn 3183 df-f 3184 df-fv 3188 df-ixp 4332 |