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Theorem mptsuppd 7318
Description: The support of a function in maps-to notation. (Contributed by AV, 10-Apr-2019.) (Revised by AV, 28-May-2019.)
Hypotheses
Ref Expression
mptsuppdifd.f 𝐹 = (𝑥𝐴𝐵)
mptsuppdifd.a (𝜑𝐴𝑉)
mptsuppdifd.z (𝜑𝑍𝑊)
mptsuppd.b ((𝜑𝑥𝐴) → 𝐵𝑈)
Assertion
Ref Expression
mptsuppd (𝜑 → (𝐹 supp 𝑍) = {𝑥𝐴𝐵𝑍})
Distinct variable groups:   𝑥,𝐴   𝑥,𝑍   𝜑,𝑥
Allowed substitution hints:   𝐵(𝑥)   𝑈(𝑥)   𝐹(𝑥)   𝑉(𝑥)   𝑊(𝑥)

Proof of Theorem mptsuppd
StepHypRef Expression
1 mptsuppdifd.f . . 3 𝐹 = (𝑥𝐴𝐵)
2 mptsuppdifd.a . . 3 (𝜑𝐴𝑉)
3 mptsuppdifd.z . . 3 (𝜑𝑍𝑊)
41, 2, 3mptsuppdifd 7317 . 2 (𝜑 → (𝐹 supp 𝑍) = {𝑥𝐴𝐵 ∈ (V ∖ {𝑍})})
5 mptsuppd.b . . . . . 6 ((𝜑𝑥𝐴) → 𝐵𝑈)
6 elex 3212 . . . . . 6 (𝐵𝑈𝐵 ∈ V)
75, 6syl 17 . . . . 5 ((𝜑𝑥𝐴) → 𝐵 ∈ V)
87biantrurd 529 . . . 4 ((𝜑𝑥𝐴) → (𝐵𝑍 ↔ (𝐵 ∈ V ∧ 𝐵𝑍)))
9 eldifsn 4317 . . . 4 (𝐵 ∈ (V ∖ {𝑍}) ↔ (𝐵 ∈ V ∧ 𝐵𝑍))
108, 9syl6rbbr 279 . . 3 ((𝜑𝑥𝐴) → (𝐵 ∈ (V ∖ {𝑍}) ↔ 𝐵𝑍))
1110rabbidva 3188 . 2 (𝜑 → {𝑥𝐴𝐵 ∈ (V ∖ {𝑍})} = {𝑥𝐴𝐵𝑍})
124, 11eqtrd 2656 1 (𝜑 → (𝐹 supp 𝑍) = {𝑥𝐴𝐵𝑍})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384   = wceq 1483  wcel 1990  wne 2794  {crab 2916  Vcvv 3200  cdif 3571  {csn 4177  cmpt 4729  (class class class)co 6650   supp csupp 7295
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pr 4906  ax-un 6949
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-supp 7296
This theorem is referenced by:  rmsupp0  42149  domnmsuppn0  42150  rmsuppss  42151  suppmptcfin  42160  lcoc0  42211  linc1  42214
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