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Theorem fnfvrnss 7122
Description: An upper bound for range determined by function values. (Contributed by NM, 8-Oct-2004.)
Assertion
Ref Expression
fnfvrnss ((𝐹 Fn 𝐴 ∧ ∀𝑥 ∈ 𝐴 (𝐹‘𝑥) ∈ 𝐵) → ran 𝐹 ⊆ 𝐵)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐹

Proof of Theorem fnfvrnss
StepHypRef Expression
1 ffnfv 7120 . 2 (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ∀𝑥 ∈ 𝐴 (𝐹‘𝑥) ∈ 𝐵))
2 frn 6718 . 2 (𝐹:𝐴⟶𝐵 → ran 𝐹 ⊆ 𝐵)
31, 2sylbir 238 1 ((𝐹 Fn 𝐴 ∧ ∀𝑥 ∈ 𝐴 (𝐹‘𝑥) ∈ 𝐵) → ran 𝐹 ⊆ 𝐵)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∈ wcel 2144  ∀wral 3076   ⊆ wss 3895  ran crn 5651   Fn wfn 6534  ⟶wf 6535  ‘cfv 6539
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-nul 5259  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-iota 6494  df-fun 6541  df-fn 6542  df-f 6543  df-fv 6547
This theorem is used by:  ffvresb  7127  dffi3  9427  infxpenlem  10096  alephsing  10358  seqexw  14164  sgnrn  15257  mgmn0plusgf  18833  srgfcl  20428  mplind  22385  1stckgenlem  23878  psmetxrge0  24638  plyreres  26610  aannenlem1  26661  bdayn0sf1o  28762  dfnns2  28764  subuhgr  29873  subupgr  29874  subumgr  29875  subusgr  29876  elrspunidl  34025  rmulccn  34607  esumfsup  34749  sxbrsigalem3  34951  sitgf  35026  ctbssinf  38423  dihf11lem  42417  hdmaprnN  43015  hgmaprnN  43052  ofoafg  44450  naddcnff  44458  ntrrn  45216  mnurndlem1  45359  volicoff  47099  dirkercncflem2  47208  fourierdlem15  47226  fourierdlem42  47253  tmachlem-extpcover  48049  grimuhgr  49079  slotresfo  50107
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