![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > f1o0 | Structured version Visualization version GIF version |
Description: One-to-one onto mapping of the empty set. (Contributed by NM, 10-Sep-2004.) |
Ref | Expression |
---|---|
f1o0 | ⊢ ∅:∅–1-1-onto→∅ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2760 | . 2 ⊢ ∅ = ∅ | |
2 | f1o00 6333 | . 2 ⊢ (∅:∅–1-1-onto→∅ ↔ (∅ = ∅ ∧ ∅ = ∅)) | |
3 | 1, 1, 2 | mpbir2an 993 | 1 ⊢ ∅:∅–1-1-onto→∅ |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1632 ∅c0 4058 –1-1-onto→wf1o 6048 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 ax-sep 4933 ax-nul 4941 ax-pr 5055 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3an 1074 df-tru 1635 df-ex 1854 df-nf 1859 df-sb 2047 df-eu 2611 df-mo 2612 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-ral 3055 df-rex 3056 df-rab 3059 df-v 3342 df-dif 3718 df-un 3720 df-in 3722 df-ss 3729 df-nul 4059 df-if 4231 df-sn 4322 df-pr 4324 df-op 4328 df-br 4805 df-opab 4865 df-id 5174 df-xp 5272 df-rel 5273 df-cnv 5274 df-co 5275 df-dm 5276 df-rn 5277 df-fun 6051 df-fn 6052 df-f 6053 df-f1 6054 df-fo 6055 df-f1o 6056 |
This theorem is referenced by: brwdom2 8645 cnfcom 8772 ackbij2lem2 9274 eupth0 27387 f1ocnt 29889 iso0 39026 |
Copyright terms: Public domain | W3C validator |