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Subject: What is the interval between =?UTF-8?Q?=E2=84=95=20and=20=CF=89=20when=20?= 
 =?UTF-8?Q?doubled=3F?=
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Date: Sun, 07 Apr 24 08:38:56 +0000
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From: WM <wolfgang.mueckenheim@tha.de>
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Consider the set {1, 2, 3, ..., ω} and multiply every element by 2 with 
the result {2, 4, 6, ..., ω*2}. What elements fall between ω and ω*2? 
What size has the interval between ℕ*2 and ω*2?

Regards, WM