Back to AtD Zeta functions
Paul Mackin
mackin.paul at verizon.net
Mon Jul 16 08:51:24 CDT 2012
On 7/16/2012 8:36 AM, Mark Kohut wrote:
> The Annie Liebowitz reminder was wonderfully ironic about a solid
> woman thinker/writer who was NOT as ironic as TRP, imho.
> And, short Wittgenstein answer is we need a longer answer and time but
> that TRP might use the ideas creatively, metaphorically, as
> he does the concepts of entropy and other concepts is still possible.
Prashant's characterization of "i" as a "convenience" reminds me that's
how Poikler describes delta t to Leni.
"The important thing is taking a function to its limit. Delta t is just
a convenience, so that it can happen."
Leni thinks it's just his way of removing all the excitement from things
. . . .
p 159
P
> *From:* Paul Mackin <mackin.paul at verizon.net>
> *To:* pynchon-l at waste.org
> *Sent:* Monday, July 16, 2012 6:57 AM
> *Subject:* Re: Back to AtD Zeta functions
>
> On 7/16/2012 12:08 AM, Prashant Kumar wrote:
>> So actually the imaginary numbers used in representing voltage don't
>> represent real or /measurable/ quantities. It's just a mathematical
>> convenience. The salient point is this: we can't directly measure
>> anything with an /i/.
>>
>> Strangely, physical entities with imaginary components do exist, such
>> as the wavefunction of a quantum mechanical system. There was a
>> result in Nature recently that proved that the wavefunction is not
>> just a statement of knowledge, it represents more than just
>> probabilities. If anyone is interested I can go into this, but the
>> short answer is Witt was wrong
>
> Thanks, Prashant. I withdraw my voltage example.
>
> Luddy wrong too. I'm in such good company.
>
> P
>>
>> On 16 July 2012 11:01, Lemuel Underwing <luunderwing at gmail.com
>> <mailto:luunderwing at gmail.com>> wrote:
>>
>> As someone who suffers from an inability to properly understand
>> maths I thank you, 'twas certainly helpful.
>>
>> It is hard for me to imagine who any of this has to do with Annie
>> Leibovitz... I take it some folks have a hard time figuring out
>> what is just /White Noise/ in Pynchon...?
>>
>>
>> On Sun, Jul 15, 2012 at 8:25 AM, Prashant Kumar
>> <siva.prashant.kumar at gmail.com
>> <mailto:siva.prashant.kumar at gmail.com>> wrote:
>>
>> First we're gonna need complex numbers, made of a real part
>> (normal numbers) plus an imaginary part. Imaginary numbers
>> are defined by multiples of /i/=squareroot(-1). Imagine a 2D
>> graph, the vertical axis marked with multiples of /i/ and the
>> horizontal axis with real numbers. So on this 2D graph we can
>> define a complex number as a point. Call such a point s =
>> \sigma + \rho, \sigma and \rho being real and imaginary
>> numbers resp.
>>
>> Since it takes real and imaginary inputs, and we plot the
>> output in the third dimension, the Riemann Zeta function can
>> be visualised as a surface sitting above the complex number
>> graph; that's what you saw, Mark (see here
>> http://en.wikipedia.org/wiki/Riemann_zeta_function for the
>> same thing with magnitude represented as colour). If I have
>> a RZ function, writing R as a function of s as R(s), the
>> zeroes are the values of s for which R(s)=0. The Riemann
>> Hypothesis (unproven) states that the zeroes of the RZ
>> function have real part 1/2. Formally, R(1/2 + \rho) = 0.
>> This gives you a line on the surface of the RZ function
>> (known as the critical line) along which the zeroes are
>> hypothesised to lie. That wasn't too bad, right?
>>
>> Verifying this hypothesis is notoriously hard.
>>
>> On 15 July 2012 21:27, Mark Kohut <markekohut at yahoo.com
>> <mailto:markekohut at yahoo.com>> wrote:
>>
>> "Except that this one's horizontal and drawn on a grid of
>> latitude and longitude,
>> instead of rel vs imaginary values---where Riemann said
>> that all the zeroes of the
>> Beta function will be found."
>>
>> p. 937 Don't know enough math to have a feel for Zeta
>> functions but Wolfram's
>> maths guide online shows Beta functions kinda graphed in
>> three dimensions,
>> with raised sections, waves, folds etc....
>>
>> And all I can associate at the moment are the raised
>> maps, showing land formations,
>> and the phrase
>>
>> History is a step-function.
>>
>> Anyone, anyone? Bueller?
>>
>>
>>
>>
>
>
>
>
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