Theorem setsn0fun 13372

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 13348	. . 3 ⊢ (𝑆 Struct 𝑋 → Fun (𝑆 ∖ {∅}))
3		setsn0fun.i	. . . . 5 ⊢ (𝜑 → 𝐼 ∈ 𝑈)
4		setsn0fun.e	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ 𝑊)
5		structex 13347	. . . . . . 7 ⊢ (𝑆 Struct 𝑋 → 𝑆 ∈ V)
6		setsfun0 13371	. . . . . . 7 ⊢ (((𝑆 ∈ V ∧ Fun (𝑆 ∖ {∅})) ∧ (𝐼 ∈ 𝑈 ∧ 𝐸 ∈ 𝑊)) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
7	5, 6	sylanl1 406	. . . . . 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 415	. . . 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 425	. 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 2209  Vcvv 2821   ∖ cdif 3217  ∅c0 3520  {csn 3708  ⟨cop 3711   class class class wbr 4128  Fun wfun 5369  (class class class)co 6079   Struct cstr 13331   sSet csts 13333

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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4247  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-opab 4191  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-res 4784  df-iota 5335  df-fun 5377  df-fv 5383  df-ov 6082  df-oprab 6083  df-mpo 6084  df-struct 13337  df-sets 13342

This theorem is referenced by:  setsvtx  16275  setsiedg  16276