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Mirrors > Home > ILE Home > Th. List > ssexd | Unicode version |
Description: A subclass of a set is a set. Deduction form of ssexg 4027. (Contributed by David Moews, 1-May-2017.) |
Ref | Expression |
---|---|
ssexd.1 |
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ssexd.2 |
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Ref | Expression |
---|---|
ssexd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssexd.2 |
. 2
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2 | ssexd.1 |
. 2
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3 | ssexg 4027 |
. 2
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4 | 1, 2, 3 | syl2anc 406 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 681 ax-5 1406 ax-7 1407 ax-gen 1408 ax-ie1 1452 ax-ie2 1453 ax-8 1465 ax-10 1466 ax-11 1467 ax-i12 1468 ax-bndl 1469 ax-4 1470 ax-17 1489 ax-i9 1493 ax-ial 1497 ax-i5r 1498 ax-ext 2097 ax-sep 4006 |
This theorem depends on definitions: df-bi 116 df-tru 1317 df-nf 1420 df-sb 1719 df-clab 2102 df-cleq 2108 df-clel 2111 df-nfc 2244 df-v 2659 df-in 3043 df-ss 3050 |
This theorem is referenced by: fex2 5249 riotaexg 5688 opabbrex 5769 f1imaen2g 6641 fiss 6817 genipv 7265 hashfacen 10472 ovshftex 10484 strslssd 11848 restid2 11972 2basgeng 12094 cnrest2 12247 cnptopresti 12249 cnptoprest 12250 cnptoprest2 12251 cnmpt2res 12308 psmetres2 12322 xmetres2 12368 limccnp2lem 12601 limccnp2cntop 12602 dvfvalap 12605 dvmulxxbr 12621 dvaddxx 12622 dvmulxx 12623 dviaddf 12624 dvimulf 12625 |
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