Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > djulf1or | GIF version |
Description: The left injection function on all sets is one to one and onto. (Contributed by BJ and Jim Kingdon, 22-Jun-2022.) |
Ref | Expression |
---|---|
djulf1or | ⊢ (inl ↾ 𝐴):𝐴–1-1-onto→({∅} × 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0ex 4087 | . 2 ⊢ ∅ ∈ V | |
2 | df-inl 6977 | . 2 ⊢ inl = (𝑥 ∈ V ↦ 〈∅, 𝑥〉) | |
3 | 1, 2 | djuf1olemr 6984 | 1 ⊢ (inl ↾ 𝐴):𝐴–1-1-onto→({∅} × 𝐴) |
Colors of variables: wff set class |
Syntax hints: ∅c0 3390 {csn 3556 × cxp 4577 ↾ cres 4581 –1-1-onto→wf1o 5162 inlcinl 6975 |
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-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-13 2127 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-nul 4086 ax-pow 4130 ax-pr 4164 ax-un 4388 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ral 2437 df-rex 2438 df-v 2711 df-sbc 2934 df-dif 3100 df-un 3102 df-in 3104 df-ss 3111 df-nul 3391 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-br 3962 df-opab 4022 df-mpt 4023 df-id 4248 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 df-dm 4589 df-rn 4590 df-res 4591 df-iota 5128 df-fun 5165 df-fn 5166 df-f 5167 df-f1 5168 df-fo 5169 df-f1o 5170 df-fv 5171 df-1st 6078 df-2nd 6079 df-inl 6977 |
This theorem is referenced by: inlresf1 6991 djuinr 6993 djuunr 6996 eldju 6998 eninl 7027 |
Copyright terms: Public domain | W3C validator |