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Theorem fssresd 5546
Description: Restriction of a function with a subclass of its domain, deduction form. (Contributed by Glauco Siliprandi, 11-Dec-2019.)
Hypotheses
Ref Expression
fssresd.1 (𝜑𝐹:𝐴𝐵)
fssresd.2 (𝜑𝐶𝐴)
Assertion
Ref Expression
fssresd (𝜑 → (𝐹𝐶):𝐶𝐵)

Proof of Theorem fssresd
StepHypRef Expression
1 fssresd.1 . 2 (𝜑𝐹:𝐴𝐵)
2 fssresd.2 . 2 (𝜑𝐶𝐴)
3 fssres 5545 . 2 ((𝐹:𝐴𝐵𝐶𝐴) → (𝐹𝐶):𝐶𝐵)
41, 2, 3syl2anc 411 1 (𝜑 → (𝐹𝐶):𝐶𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4  wss 3214  cres 4756  wf 5353
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 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-br 4115  df-opab 4177  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-fun 5359  df-fn 5360  df-f 5361
This theorem is referenced by:  gsumsplit1r  13695  znf1o  14911  cnrest  15212  cnptopresti  15215  cnptoprest  15216  psmetres2  15310  xmetres2  15356  metres2  15358  xmetresbl  15417  rescncf  15558  wlkres  16486  trilpolemlt1  16937  gfsump1  16980  gfsumcl  16982
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