[seqfan] Re: Wrong formula in Wolfram functions

Meeussen Wouter (bkarnd) wouter.meeussen at vandemoortele.com
Mon Apr 2 10:14:18 CEST 2012

I guess hardcoded,
(I'm talking about my very old version


-----Original Message-----
From: seqfan-bounces at list.seqfan.eu [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Georgi Guninski
Sent: maandag 2 april 2012 10:02
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: Wrong formula in Wolfram functions

On Sat, Mar 31, 2012 at 04:01:07PM +0200, Wouter Meeussen wrote:
> Enrique, funny:
> my version 4.1 gives it correctly as
> Sum[MoebiusMu[k]^2/k^s, {k, 1, Infinity}]  ==> Zeta[s]/Zeta[2s]
> but then it garbles this one:
> Sum[ EulerPhi[k]/k^s, {k, 1,Infinity}]  =/=> Zeta[-1 + s] Zeta[s] 
> should be  Zeta[-1 + s] / Zeta[s]
> New Versions? hmm,
> "plus ça change, plus ça reste la même chose"?
> or: "you can prove the presence of bugs, but never the absence of'm"
> Wouter.

Are these sums hardcoded as axioms or proved/found by the software?


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