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| Mirrors > Home > ILE Home > Th. List > supelti | Unicode version | ||
| Description: Supremum membership in a set. (Contributed by Jim Kingdon, 16-Jan-2022.) | 
| Ref | Expression | 
|---|---|
| supelti.ti | 
 | 
| supelti.ex | 
 | 
| supelti.ss | 
 | 
| Ref | Expression | 
|---|---|
| supelti | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | supelti.ti | 
. . . . 5
 | |
| 2 | supelti.ss | 
. . . . . 6
 | |
| 3 | supelti.ex | 
. . . . . 6
 | |
| 4 | ssrexv 3248 | 
. . . . . 6
 | |
| 5 | 2, 3, 4 | sylc 62 | 
. . . . 5
 | 
| 6 | 1, 5 | supclti 7064 | 
. . . 4
 | 
| 7 | elisset 2777 | 
. . . 4
 | |
| 8 | 6, 7 | syl 14 | 
. . 3
 | 
| 9 | eqcom 2198 | 
. . . 4
 | |
| 10 | 9 | exbii 1619 | 
. . 3
 | 
| 11 | 8, 10 | sylib 122 | 
. 2
 | 
| 12 | simpr 110 | 
. . 3
 | |
| 13 | 1, 5 | supval2ti 7061 | 
. . . . . . . 8
 | 
| 14 | 13 | eqeq1d 2205 | 
. . . . . . 7
 | 
| 15 | 14 | biimpa 296 | 
. . . . . 6
 | 
| 16 | 1, 5 | supeuti 7060 | 
. . . . . . . 8
 | 
| 17 | riota1 5896 | 
. . . . . . . 8
 | |
| 18 | 16, 17 | syl 14 | 
. . . . . . 7
 | 
| 19 | 18 | adantr 276 | 
. . . . . 6
 | 
| 20 | 15, 19 | mpbird 167 | 
. . . . 5
 | 
| 21 | 20 | simpld 112 | 
. . . 4
 | 
| 22 | 2, 3, 16 | jca32 310 | 
. . . . 5
 | 
| 23 | 20 | simprd 114 | 
. . . . 5
 | 
| 24 | reupick 3447 | 
. . . . 5
 | |
| 25 | 22, 23, 24 | syl2an2r 595 | 
. . . 4
 | 
| 26 | 21, 25 | mpbird 167 | 
. . 3
 | 
| 27 | 12, 26 | eqeltrd 2273 | 
. 2
 | 
| 28 | 11, 27 | exlimddv 1913 | 
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-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-un 3161 df-in 3163 df-ss 3170 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-iota 5219 df-riota 5877 df-sup 7050 | 
| This theorem is referenced by: zsupcl 10321 | 
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