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| Mirrors > Home > ILE Home > Th. List > snid | Unicode version | ||
| Description: A set is a member of its singleton. Part of Theorem 7.6 of [Quine] p. 49. (Contributed by NM, 31-Dec-1993.) |
| Ref | Expression |
|---|---|
| snid.1 |
|
| Ref | Expression |
|---|---|
| snid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snid.1 |
. 2
| |
| 2 | snidb 3674 |
. 2
| |
| 3 | 1, 2 | mpbi 145 |
1
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| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2189 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-v 2779 df-sn 3650 |
| This theorem is referenced by: vsnid 3676 exsnrex 3686 rabsnt 3719 sneqr 3815 undifexmid 4254 exmidexmid 4257 ss1o0el1 4258 exmidundif 4267 exmidundifim 4268 exmid1stab 4269 unipw 4280 intid 4287 ordtriexmidlem2 4587 ordtriexmid 4588 ontriexmidim 4589 ordtri2orexmid 4590 regexmidlem1 4600 0elsucexmid 4632 ordpwsucexmid 4637 opthprc 4745 fsn 5777 fsn2 5779 fvsn 5804 fvsnun1 5806 acexmidlema 5960 acexmidlemb 5961 acexmidlemab 5963 brtpos0 6363 mapsn 6802 mapsncnv 6807 0elixp 6841 en1 6916 djulclr 7179 djurclr 7180 djulcl 7181 djurcl 7182 djuf1olem 7183 exmidonfinlem 7334 elreal2 7980 1exp 10752 hashinfuni 10961 wrdexb 11045 0bits 12431 ennnfonelemhom 12947 dvef 15360 djucllem 16044 bj-d0clsepcl 16168 |
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