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Theorem subgruhgrfun 29643
Description: The edge function of a subgraph of a hypergraph is a function. (Contributed by AV, 16-Nov-2020.) (Proof shortened by AV, 20-Nov-2020.)
Assertion
Ref Expression
subgruhgrfun ((𝐺 ∈ UHGraph ∧ 𝑆 SubGraph 𝐺) → Fun (iEdg‘𝑆))

Proof of Theorem subgruhgrfun
StepHypRef Expression
1 eqid 2762 . . 3 (iEdg‘𝐺) = (iEdg‘𝐺)
21uhgrfun 29427 . 2 (𝐺 ∈ UHGraph → Fun (iEdg‘𝐺))
3 subgrfun 29642 . 2 ((Fun (iEdg‘𝐺) ∧ 𝑆 SubGraph 𝐺) → Fun (iEdg‘𝑆))
42, 3sylan 591 1 ((𝐺 ∈ UHGraph ∧ 𝑆 SubGraph 𝐺) → Fun (iEdg‘𝑆))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 400  wcel 2142   class class class wbr 5108  Fun wfun 6530  cfv 6536  iEdgciedg 29358  UHGraphcuhgr 29417   SubGraph csubgr 29628
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1824  ax-4 1838  ax-5 1939  ax-6 1996  ax-7 2037  ax-8 2144  ax-9 2152  ax-ext 2734  ax-sep 5256  ax-nul 5268  ax-pr 5403
This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1104  df-tru 1572  df-fal 1582  df-ex 1809  df-sb 2096  df-clab 2741  df-cleq 2754  df-clel 2837  df-ne 2958  df-ral 3079  df-rex 3089  df-rab 3416  df-v 3456  df-sbc 3744  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4487  df-pw 4563  df-sn 4589  df-pr 4591  df-op 4595  df-uni 4872  df-br 5109  df-opab 5173  df-xp 5666  df-rel 5667  df-cnv 5668  df-co 5669  df-dm 5670  df-rn 5671  df-res 5672  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-fv 6544  df-uhgr 29419  df-subgr 29629
This theorem is used by:  subgruhgredgd  29645  subuhgr  29647  subupgr  29648  subumgr  29649  subusgr  29650
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