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| Mirrors > Home > ILE Home > Th. List > fssresd | GIF version | ||
| Description: Restriction of a function with a subclass of its domain, deduction form. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| fssresd.1 | ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) |
| fssresd.2 | ⊢ (𝜑 → 𝐶 ⊆ 𝐴) |
| Ref | Expression |
|---|---|
| fssresd | ⊢ (𝜑 → (𝐹 ↾ 𝐶):𝐶⟶𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fssresd.1 | . 2 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) | |
| 2 | fssresd.2 | . 2 ⊢ (𝜑 → 𝐶 ⊆ 𝐴) | |
| 3 | fssres 5520 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶⟶𝐵) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → (𝐹 ↾ 𝐶):𝐶⟶𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ⊆ wss 3201 ↾ cres 4733 ⟶wf 5329 |
| 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 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-br 4094 df-opab 4156 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-fun 5335 df-fn 5336 df-f 5337 |
| This theorem is referenced by: gsumsplit1r 13542 znf1o 14727 cnrest 15026 cnptopresti 15029 cnptoprest 15030 psmetres2 15124 xmetres2 15170 metres2 15172 xmetresbl 15231 rescncf 15372 wlkres 16300 trilpolemlt1 16753 gfsump1 16795 gfsumcl 16796 |
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