![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > vsnid | GIF version |
Description: A setvar variable is a member of its singleton (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
vsnid | ⊢ 𝑥 ∈ {𝑥} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 2692 | . 2 ⊢ 𝑥 ∈ V | |
2 | 1 | snid 3563 | 1 ⊢ 𝑥 ∈ {𝑥} |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1481 {csn 3532 |
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: rext 4145 snnex 4377 dtruex 4482 fnressn 5614 fressnfv 5615 findcard2d 6793 findcard2sd 6794 diffifi 6796 ac6sfi 6800 fisseneq 6828 finomni 7020 cc2lem 7098 modfsummodlem1 11257 txdis 12485 txdis1cn 12486 |
Copyright terms: Public domain | W3C validator |