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Theorem subgruhgrfun 29796
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 2760 . . 3 (iEdg‘𝐺) = (iEdg‘𝐺)
21uhgrfun 29577 . 2 (𝐺 ∈ UHGraph → Fun (iEdg‘𝐺))
3 subgrfun 29795 . 2 ((Fun (iEdg‘𝐺) ∧ 𝑆 SubGraph 𝐺) → Fun (iEdg‘𝑆))
42, 3sylan 592 1 ((𝐺 ∈ UHGraph ∧ 𝑆 SubGraph 𝐺) → Fun (iEdg‘𝑆))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401  wcel 2145   class class class wbr 5102  Fun wfun 6521  cfv 6527  iEdgciedg 29508  UHGraphcuhgr 29567   SubGraph csubgr 29781
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  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 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-sbc 3739  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-br 5103  df-opab 5167  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-iota 6483  df-fun 6529  df-fn 6530  df-f 6531  df-fv 6535  df-uhgr 29569  df-subgr 29782
This theorem is used by:  subgruhgredgd  29798  subuhgr  29800  subupgr  29801  subumgr  29802  subusgr  29803
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