<div dir="auto"><div dir="ltr"><div><br></div><div>Hello Thomas, </div><div><br></div><div>Full list of skills requested by Ruud's emails is as follows:</div><div><br></div><div>Vector Algebra, Riemann Geometry, Complex Numbers, Various derivations of Pi, Circumference of Ellipse, Zeta Function, Hilbert Spaces.</div><div><br></div><div>I think expected relevance of extra dimensions with gravity is well known. Hence Vector Algebra, Riemann Geometry, Complex Numbers, Hilbert Spaces may find relevance. </div><div><br></div><div>String theorists make big deal with Zeta Function. Through quick search, I found this link:</div><div><br></div><div><strong><font color="#1a0dab" size="1">F]</font></strong><a href="http://empslocal.ex.ac.uk/~mwatkins/zeta/nardelli2010a.pdf" target="_blank"><font color="#1a0dab">Links between string theory and the Riemann's zeta function</font></a></div><div><br></div><div><span>So let's check it out to rule it out, if really it has really nothing</span> to do with physics.</div><div dir="auto"><br></div><div dir="auto">Gravity being closely related to circular motion, for me it's a reason good enough to suspect that π may find a relevance with the phenomenon of gravity. Afterall, it is still a matter of debate , whether mathematics originate from reality (physical or otherwise) or mathematics is fully a product of human imagination. I found a quick link discussing whether "Mathematics is Discovered or Invented"</div><div dir="auto"><span><br></span></div><div dir="auto"><span><br></span></div><div><span><a href="http://m.huffpost.com/us/entry/3895622" target="_blank">http://m.huffpost.com/us/<wbr>entry/3895622</a><br></span></div><div dir="auto"><span><br></span></div><div>If mathematics is discovered then π should be related to something which is physically existing out there. And multiple derivations, infinite series of π may offer an opportunity not to see π only as ratio of diameter to circumference, but a mathematician may describe / relate π in a manner which is relevant/useful to get to the final equations.</div><div dir="auto"><br></div><div dir="auto">At the moment, possible relevance of π and perimeter of ellipse with gravity, is based upon intuition.</div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto"><br></div><div dir="auto">Tufail Abbas</div><span><div><span><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 16 January 2017 at 15:16, Thomas Goodey <span dir="ltr"><<a href="mailto:thomas@flyingkettle.com" target="_blank">thomas@flyingkettle.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">"Various derivations of Pi, Circumference of Ellipse, Zeta<br>
Function...<br>
<br>
What have these things got to do with physics? Derivations<br>
of pi are pure mathematics having no physical application.<br>
The circumference of an ellipse is a non-elementary<br>
mathematical problem, but is fully understood. See<br>
<br>
<a href="https://en.wikipedia.org/wiki/Ellipse#Circumference" rel="noreferrer" target="_blank">https://en.wikipedia.org/wiki/<wbr>Ellipse#Circumference</a><br>
<br>
And no mathematical thing could be further from physics<br>
than the zeta function!<br>
<br>
Thomas Goodey<br>
<br>
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Humankind, where justice would not be<br>
occasional flickering light, but a steady glow<br>
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<br>
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