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| Description: Subset theorem for cross product. Generalization of Theorem 101 of [Suppes] p. 52. (The proof was shortened by Andrew Salmon, 27-Aug-2011.) |
| Ref | Expression |
|---|---|
| xpss12 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relxp 4088 |
. . 3
| |
| 2 | 1 | a1i 8 |
. 2
|
| 3 | ssel 2615 |
. . . 4
| |
| 4 | ssel 2615 |
. . . 4
| |
| 5 | 3, 4 | im2anan9 622 |
. . 3
|
| 6 | visset 2295 |
. . . 4
| |
| 7 | 6 | opelxp 4036 |
. . 3
|
| 8 | 6 | opelxp 4036 |
. . 3
|
| 9 | 5, 7, 8 | 3imtr4g 612 |
. 2
|
| 10 | 2, 9 | relssdv 4079 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: xpss1 4091 xpss2 4092 ssres2OLD 4241 ssxpb 4346 ssrnres 4354 relrelss 4417 coexg 4429 fssxp 4575 fssxpOLD 4576 funssxp 4577 oprabss 4935 xpdom3 5504 dmaddpi 6170 dmmulpi 6171 axresscnOLD 6421 mulnzcnopr 6891 climuz0i 8368 xpnnen 8768 infxpidmlem7 8827 txuni 8935 metreslem 9099 cncfmet 9183 remetba 9187 lmbrf 9208 iscauf 9217 iscau5 9219 iscaunns 9222 lmsslem 9230 caussi 9232 lmclimnn 9242 resgrprn 9403 issubgi 9431 ghgrpilem4 9444 sspg 9726 ssps 9728 sspmlem 9730 basmetres 10185 subtopmetlem 10255 h2hcau 10481 h2hlm 10482 hhssabli 10765 hhssnv 10767 hhshsslem1 10770 ghomfo 13634 eucalg 13755 residcp 14392 svs2 14829 difxp 15690 stioo 15845 iccst 15875 oprpiece1res1 15880 oprpiece1res2 15881 txsubsp 15912 txcld 15914 cnresoprab 15915 txmet 15925 heiborlem33 15987 icccmp 16027 exidreslem 16030 phtpycolem3 16053 phtpycolem4 16054 pcocn 16076 pcohtpylem3 16082 pcopt 16084 pcorevlem 16086 divrngcl 16110 isdivrng2 16111 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-opab 3396 df-xp 4000 df-rel 4001 |