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| Mirrors > Home > ILE Home > Th. List > fssd | GIF version | ||
| Description: Expanding the codomain of a mapping, deduction form. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| fssd.f | ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) |
| fssd.b | ⊢ (𝜑 → 𝐵 ⊆ 𝐶) |
| Ref | Expression |
|---|---|
| fssd | ⊢ (𝜑 → 𝐹:𝐴⟶𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fssd.f | . 2 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) | |
| 2 | fssd.b | . 2 ⊢ (𝜑 → 𝐵 ⊆ 𝐶) | |
| 3 | fss 5501 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐹:𝐴⟶𝐶) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → 𝐹:𝐴⟶𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ⊆ wss 3201 ⟶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-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3207 df-ss 3214 df-f 5337 |
| This theorem is referenced by: mapss 6903 ac6sfi 7130 fseq1p1m1 10374 seqf1oglem2 10828 sswrd 11171 resqrexlemcvg 11642 resqrexlemsqa 11647 climcvg1nlem 11972 fsumcl2lem 12022 nninfctlemfo 12674 ennnfonelemh 13088 gsumress 13541 gsumwsubmcl 13642 gsumfzsubmcl 13988 cnrest2 15030 cnptoprest2 15034 cncfss 15377 limccnpcntop 15469 dvidre 15491 dvcoapbr 15501 dvef 15521 plyaddlem 15543 plymullem 15544 plycjlemc 15554 plycn 15556 dvply2g 15560 upgruhgr 16035 umgrupgr 16036 upgr1edc 16045 umgrislfupgrdom 16055 usgrislfuspgrdom 16114 isomninnlem 16745 trilpolemisumle 16753 iswomninnlem 16765 ismkvnnlem 16768 |
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