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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 5494 | . 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 3200 ⟶wf 5322 |
| 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 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3206 df-ss 3213 df-f 5330 |
| This theorem is referenced by: mapss 6860 ac6sfi 7087 fseq1p1m1 10329 seqf1oglem2 10783 sswrd 11126 resqrexlemcvg 11584 resqrexlemsqa 11589 climcvg1nlem 11914 fsumcl2lem 11964 nninfctlemfo 12616 ennnfonelemh 13030 gsumress 13483 gsumwsubmcl 13584 gsumfzsubmcl 13930 cnrest2 14966 cnptoprest2 14970 cncfss 15313 limccnpcntop 15405 dvidre 15427 dvcoapbr 15437 dvef 15457 plyaddlem 15479 plymullem 15480 plycjlemc 15490 plycn 15492 dvply2g 15496 upgruhgr 15968 umgrupgr 15969 upgr1edc 15978 umgrislfupgrdom 15988 usgrislfuspgrdom 16047 isomninnlem 16660 trilpolemisumle 16668 iswomninnlem 16680 ismkvnnlem 16683 |
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