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Theorem setsn0fun 12453
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 (𝜑𝑆 Struct 𝑋)
setsn0fun.i (𝜑𝐼𝑈)
setsn0fun.e (𝜑𝐸𝑊)
Assertion
Ref Expression
setsn0fun (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))

Proof of Theorem setsn0fun
StepHypRef Expression
1 setsn0fun.s . 2 (𝜑𝑆 Struct 𝑋)
2 structn0fun 12429 . . 3 (𝑆 Struct 𝑋 → Fun (𝑆 ∖ {∅}))
3 setsn0fun.i . . . . 5 (𝜑𝐼𝑈)
4 setsn0fun.e . . . . 5 (𝜑𝐸𝑊)
5 structex 12428 . . . . . . 7 (𝑆 Struct 𝑋𝑆 ∈ V)
6 setsfun0 12452 . . . . . . 7 (((𝑆 ∈ V ∧ Fun (𝑆 ∖ {∅})) ∧ (𝐼𝑈𝐸𝑊)) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
75, 6sylanl1 400 . . . . . 6 (((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) ∧ (𝐼𝑈𝐸𝑊)) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
87expcom 115 . . . . 5 ((𝐼𝑈𝐸𝑊) → ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
93, 4, 8syl2anc 409 . . . 4 (𝜑 → ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
109com12 30 . . 3 ((𝑆 Struct 𝑋 ∧ Fun (𝑆 ∖ {∅})) → (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
112, 10mpdan 419 . 2 (𝑆 Struct 𝑋 → (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅})))
121, 11mpcom 36 1 (𝜑 → Fun ((𝑆 sSet ⟨𝐼, 𝐸⟩) ∖ {∅}))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wcel 2141  Vcvv 2730  cdif 3118  c0 3414  {csn 3583  cop 3586   class class class wbr 3989  Fun wfun 5192  (class class class)co 5853   Struct cstr 12412   sSet csts 12414
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194  ax-un 4418  ax-setind 4521
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-nul 3415  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-br 3990  df-opab 4051  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-res 4623  df-iota 5160  df-fun 5200  df-fv 5206  df-ov 5856  df-oprab 5857  df-mpo 5858  df-struct 12418  df-sets 12423
This theorem is referenced by: (None)
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