| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > fnssres | GIF version | ||
| Description: Restriction of a function with a subclass of its domain. (Contributed by NM, 2-Aug-1994.) |
| Ref | Expression |
|---|---|
| fnssres | ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ⊆ 𝐴) → (𝐹 ↾ 𝐵) Fn 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fnssresb 5469 | . 2 ⊢ (𝐹 Fn 𝐴 → ((𝐹 ↾ 𝐵) Fn 𝐵 ↔ 𝐵 ⊆ 𝐴)) | |
| 2 | 1 | biimpar 297 | 1 ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ⊆ 𝐴) → (𝐹 ↾ 𝐵) Fn 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ⊆ wss 3210 ↾ cres 4750 Fn wfn 5346 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2814 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-br 4109 df-opab 4171 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-res 4760 df-fun 5353 df-fn 5354 |
| This theorem is referenced by: fnssresd 5471 fnresin1 5472 fnresin2 5473 fssres 5539 fvreseq 5780 fnreseql 5787 ffvresb 5839 fnressn 5869 ofres 6280 tfrlem1 6538 frecrdg 6638 resixp 6967 resfnfinfinss 7205 suplocexprlemell 8027 seq3feq2 10837 seqf1oglem2 10881 reeff1 12382 rngmgpf 14073 mgpf 14147 upxp 15129 uptx 15131 cnmpt1st 15145 cnmpt2nd 15146 ioocosf1o 15711 mpodvdsmulf1o 15850 |
| Copyright terms: Public domain | W3C validator |