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Theorem apsscn 8870
Description: The points apart from a given point are complex numbers. (Contributed by Jim Kingdon, 19-Dec-2023.)
Assertion
Ref Expression
apsscn {𝑥𝐴𝑥 # 𝐵} ⊆ ℂ
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵

Proof of Theorem apsscn
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 breq1 4096 . . . . 5 (𝑥 = 𝑦 → (𝑥 # 𝐵𝑦 # 𝐵))
21elrab 2963 . . . 4 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} ↔ (𝑦𝐴𝑦 # 𝐵))
3 aprcl 8869 . . . 4 (𝑦 # 𝐵 → (𝑦 ∈ ℂ ∧ 𝐵 ∈ ℂ))
42, 3simplbiim 387 . . 3 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} → (𝑦 ∈ ℂ ∧ 𝐵 ∈ ℂ))
54simpld 112 . 2 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} → 𝑦 ∈ ℂ)
65ssriv 3232 1 {𝑥𝐴𝑥 # 𝐵} ⊆ ℂ
Colors of variables: wff set class
Syntax hints:  wa 104  wcel 2202  {crab 2515  wss 3201   class class class wbr 4093  cc 8073   # cap 8804
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-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-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-resscn 8167  ax-icn 8170  ax-addcl 8171  ax-mulcl 8173
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-rab 2520  df-v 2805  df-sbc 3033  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-fo 5339  df-fv 5341  df-1st 6312  df-2nd 6313  df-ap 8805
This theorem is referenced by:  expghmap  14683  maxcncf  15406  mincncf  15407  limccoap  15469  dveflem  15517
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