Talk:Fake 4-ball

Really???
Is it really still considered a "fake" 4-ball if it's a standard 4-ball

B4 =  {(x1, x2, x3, x4) ∈ R4  |  x12 + x22 + x32 + x42  ≤  1)} ??? 2600:1700:E1C0:F340:D18C:9209:5159:78CC (talk) 21:16, 8 September 2018 (UTC)