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Mirrors > Home > ILE Home > Th. List > elsni | Unicode version |
Description: There is only one element in a singleton. (Contributed by NM, 5-Jun-1994.) |
Ref | Expression |
---|---|
elsni |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elsng 3547 |
. 2
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2 | 1 | ibi 175 |
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 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-sn 3538 |
This theorem is referenced by: elsn2g 3565 disjsn2 3594 sssnm 3689 disjxsn 3935 pwntru 4130 opth1 4166 elsuci 4333 ordtri2orexmid 4446 onsucsssucexmid 4450 sosng 4620 ressn 5087 funcnvsn 5176 funinsn 5180 fvconst 5616 fmptap 5618 fmptapd 5619 fvunsng 5622 mposnif 5873 1stconst 6126 2ndconst 6127 reldmtpos 6158 tpostpos 6169 1domsn 6721 ac6sfi 6800 onunsnss 6813 snon0 6832 snexxph 6846 elfi2 6868 supsnti 6900 djuf1olem 6946 eldju2ndl 6965 eldju2ndr 6966 difinfsnlem 6992 elreal2 7662 ax1rid 7709 ltxrlt 7854 un0addcl 9034 un0mulcl 9035 elfzonlteqm1 10018 fxnn0nninf 10242 1exp 10353 hashinfuni 10555 hashennnuni 10557 hashprg 10586 zfz1isolemiso 10614 fisumss 11193 sumsnf 11210 fsumsplitsn 11211 fsum2dlemstep 11235 fisumcom2 11239 divalgmod 11660 phi1 11931 dfphi2 11932 exmidunben 11975 txdis1cn 12486 bj-nntrans 13320 bj-nnelirr 13322 pwtrufal 13365 sssneq 13370 exmidsbthrlem 13392 |
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