Theorem setsn0fun 13142

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 13118	. . 3 ⊢ (𝑆 Struct 𝑋 → Fun (𝑆 ∖ {∅}))
3		setsn0fun.i	. . . . 5 ⊢ (𝜑 → 𝐼 ∈ 𝑈)
4		setsn0fun.e	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ 𝑊)
5		structex 13117	. . . . . . 7 ⊢ (𝑆 Struct 𝑋 → 𝑆 ∈ V)
6		setsfun0 13141	. . . . . . 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 2201  Vcvv 2801   ∖ cdif 3196  ∅c0 3493  {csn 3670  ⟨cop 3673   class class class wbr 4089  Fun wfun 5322  (class class class)co 6023   Struct cstr 13101   sSet csts 13103

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2203  ax-14 2204  ax-ext 2212  ax-sep 4208  ax-pow 4266  ax-pr 4301  ax-un 4532  ax-setind 4637

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1810  df-eu 2081  df-mo 2082  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-ne 2402  df-ral 2514  df-rex 2515  df-rab 2518  df-v 2803  df-sbc 3031  df-dif 3201  df-un 3203  df-in 3205  df-ss 3212  df-nul 3494  df-pw 3655  df-sn 3676  df-pr 3677  df-op 3679  df-uni 3895  df-br 4090  df-opab 4152  df-id 4392  df-xp 4733  df-rel 4734  df-cnv 4735  df-co 4736  df-dm 4737  df-res 4739  df-iota 5288  df-fun 5330  df-fv 5336  df-ov 6026  df-oprab 6027  df-mpo 6028  df-struct 13107  df-sets 13112

This theorem is referenced by:  setsvtx  15931  setsiedg  15932