[seqfan] Re: Name for a type of set needed
Bob Selcoe
rselcoe at entouchonline.net
Mon Mar 27 22:20:09 CEST 2017
Hi Jean-Paul,
Yes, thank you, that is very helpful. Perhaps "radical class" is clear and
parsimonious enough? So we can say numbers with radical R make up radical
class C_R; so for example, C_10 = {10, 20, 40, 50, 80, 100, 160, 200...}.
Unless there are any objections I will include this as a definition in
A284311 (an array of "radical classes") and A284457 (its transposed
companion).
Cheers,
Bob
--------------------------------------------------
From: "jean-paul allouche" <jean-paul.allouche at imj-prg.fr>
Sent: Monday, March 27, 2017 2:14 PM
To: <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: Name for a type of set needed
> Hi
>
> The largest squarefree divisor of an integer is called the
> radical of the integer and/or the squarefree kernel of
> this integer (see, e.g., A007947).
> Does it help?
>
> best
> jean-paul
>
>
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