Theorem setsn0fun 13339

Description: The value of the structure replacement function (without the empty set) is a function if the structure (without the empty set) is a function. (Contributed by AV, 7-Jun-2021.) (Revised by AV, 16-Nov-2021.)

Hypotheses

Ref	Expression
setsn0fun.s	⊢ (𝜑 → 𝑆 Struct 𝑋)
setsn0fun.i	⊢ (𝜑 → 𝐼 ∈ 𝑈)
setsn0fun.e	⊢ (𝜑 → 𝐸 ∈ 𝑊)

Assertion

Ref	Expression
setsn0fun	⊢ (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))

Proof of Theorem setsn0fun

Step	Hyp	Ref	Expression
1		setsn0fun.s	. 2 ⊢ (𝜑 → 𝑆 Struct 𝑋)
2		structn0fun 13315	. . 3 ⊢ (𝑆 Struct 𝑋 → Fun (𝑆 ∖ {∅}))
3		setsn0fun.i	. . . . 5 ⊢ (𝜑 → 𝐼 ∈ 𝑈)
4		setsn0fun.e	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ 𝑊)
5		structex 13314	. . . . . . 7 ⊢ (𝑆 Struct 𝑋 → 𝑆 ∈ V)
6		setsfun0 13338	. . . . . . 7 ⊢ (((𝑆 ∈ V ∧ Fun (𝑆 ∖ {∅})) ∧ (𝐼 ∈ 𝑈 ∧ 𝐸 ∈ 𝑊)) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
7	5, 6	sylanl1 402	. . . . . 6 ⊢ (((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) ∧ (𝐼 ∈ 𝑈 ∧ 𝐸 ∈ 𝑊)) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
8	7	expcom 116	. . . . 5 ⊢ ((𝐼 ∈ 𝑈 ∧ 𝐸 ∈ 𝑊) → ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
9	3, 4, 8	syl2anc 411	. . . 4 ⊢ (𝜑 → ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
10	9	com12 30	. . 3 ⊢ ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
11	2, 10	mpdan 421	. 2 ⊢ (𝑆 Struct 𝑋 → (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
12	1, 11	mpcom 36	1 ⊢ (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))

Syntax hints:   → wi 4   ∧ wa 104   ∈ wcel 2205  Vcvv 2815   ∖ cdif 3211  ∅c0 3512  {csn 3695  ⟨cop 3698   class class class wbr 4115  Fun wfun 5353  (class class class)co 6060   Struct cstr 13298   sSet csts 13300

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-in1 619  ax-in2 620  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 4234  ax-pow 4293  ax-pr 4328  ax-un 4560  ax-setind 4666

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-sbc 3046  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3677  df-sn 3701  df-pr 3702  df-op 3704  df-uni 3921  df-br 4116  df-opab 4178  df-id 4420  df-xp 4762  df-rel 4763  df-cnv 4764  df-co 4765  df-dm 4766  df-res 4768  df-iota 5319  df-fun 5361  df-fv 5367  df-ov 6063  df-oprab 6064  df-mpo 6065  df-struct 13304  df-sets 13309

This theorem is referenced by:  setsvtx  16177  setsiedg  16178