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Mirrors > Home > ILE Home > Th. List > 1ex | Unicode version |
Description: 1 is a set. Common special case. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Ref | Expression |
---|---|
1ex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1cn 7681 | . 2 | |
2 | 1 | elexi 2672 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1465 cvv 2660 cc 7586 c1 7589 |
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-5 1408 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-4 1472 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-ext 2099 ax-1cn 7681 |
This theorem depends on definitions: df-bi 116 df-sb 1721 df-clab 2104 df-cleq 2110 df-clel 2113 df-v 2662 |
This theorem is referenced by: nn1suc 8703 nn0ind-raph 9126 fzprval 9817 fztpval 9818 m1expcl2 10270 1exp 10277 facnn 10428 fac0 10429 prhash2ex 10510 ege2le3 11291 1nprm 11707 dvexp 12755 dvef 12767 isomninnlem 13121 |
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