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Theorem apsscn 8969
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 4131 . . . . 5 (𝑥 = 𝑦 → (𝑥 # 𝐵𝑦 # 𝐵))
21elrab 2982 . . . 4 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} ↔ (𝑦𝐴𝑦 # 𝐵))
3 aprcl 8968 . . . 4 (𝑦 # 𝐵 → (𝑦 ∈ ℂ ∧ 𝐵 ∈ ℂ))
42, 3simplbiim 391 . . 3 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} → (𝑦 ∈ ℂ ∧ 𝐵 ∈ ℂ))
54simpld 112 . 2 (𝑦 ∈ {𝑥𝐴𝑥 # 𝐵} → 𝑦 ∈ ℂ)
65ssriv 3252 1 {𝑥𝐴𝑥 # 𝐵} ⊆ ℂ
Colors of variables: wff set class
Syntax hints:  wa 104  wcel 2209  {crab 2532  wss 3220   class class class wbr 4128  cc 8171   # cap 8903
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 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-resscn 8265  ax-icn 8268  ax-addcl 8269  ax-mulcl 8271
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  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-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-fo 5381  df-fv 5383  df-1st 6368  df-2nd 6369  df-ap 8904
This theorem is referenced by:  expghmap  14925  maxcncf  15699  mincncf  15700  limccoap  15762  dveflem  15810
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