SERVING THE QUANTITATIVE FINANCE COMMUNITY

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by GrenvilleCroll
June 12th, 2019, 11:02 pm
Forum: Off Topic
Topic: Void, Monoids, Spheroids & Kawaguchi spaces
Replies: 19
Views: 130528

Re: Void, Monoids, Spheroids & Kawaguchi spaces

A few months ago I completed a draft paper that showed, based upon some Monte Carlo simulation, that the distribution of primes around a quadratic was Gaussian.The quadratic is based upon the Logarithmic Integrand Li(x). This would appear to be another demonstration that the RH is true. I now have t...
by GrenvilleCroll
March 7th, 2017, 12:13 am
Forum: Off Topic
Topic: Steak and Sex Day!!!
Replies: 90
Views: 121437

Re: Steak and Sex Day!!!

Its not my most politically correct post. For which apologies. I'm still around and having fun. I hope you lot are having fun too! Bfn
by GrenvilleCroll
April 25th, 2016, 6:15 pm
Forum: General Forum
Topic: Order and Disorder in Financial Time Series
Replies: 4
Views: 7098

Order and Disorder in Financial Time Series

<t>QuoteOriginally posted by: Traden4AlphaNice! You might enjoy exploring the binary series produced by various 1-D cellular automata.Good idea! But I got myself into knots instead.BiEntropy works there too - it splits the alternating and non-alternating knots of 9 and 10 crossings.Which suggests ev...
by GrenvilleCroll
January 6th, 2016, 9:24 pm
Forum: Programming and Software Forum
Topic: EuSpRIG 2016 - Call for Papers
Replies: 0
Views: 2595

EuSpRIG 2016 - Call for Papers

<t>The European Spreadsheet Risks Interest Group 17th Annual Conference (EuSpRIG 2016) will be held at the Institute of Chartered Accountants in England and Wales (ICAEW), Moorgate, London, on the 7th & 8th July 2016. The full call for papers and presentations is here. EuSpRIG is not-for-profit....
by GrenvilleCroll
August 31st, 2015, 8:33 pm
Forum: Off Topic
Topic: New Forum!
Replies: 24
Views: 2476

New Forum!

There are obvious risks.But significant benefits too, as the new emerges from the old.Forum II on main menu. Start date 01/01/2016.Old Forum I still accessible, read only.....
by GrenvilleCroll
August 4th, 2015, 7:43 pm
Forum: General Forum
Topic: how to produce 10000 random number with ziph-mandelbrot
Replies: 22
Views: 5352

how to produce 10000 random number with ziph-mandelbrot

<t>No, the RAND distribution of 1947 vintage was uniform random. I did a recent analysis of it here. There are better sources of random digits.You will need a good source of random numbers to perform the stratified sampling of the cumulative distribution function of the Zipf Mandelbrot distribution....
by GrenvilleCroll
July 30th, 2015, 10:36 pm
Forum: General Forum
Topic: how to produce 10000 random number with ziph-mandelbrot
Replies: 22
Views: 5352

how to produce 10000 random number with ziph-mandelbrot

<t>You need to partition the Cumulative Distribution of the Zipf Mandelbrot function into 10,000 equidistant regions. Then use a good quality random number generator in (0,1) to sample each region. Its called stratified sampling/latin hypercube sampling.I recommmend that you turn off your television...
by GrenvilleCroll
March 17th, 2015, 10:59 pm
Forum: Brainteaser Forum
Topic: Prove that E0 is transcendental
Replies: 15
Views: 7306

Prove that E0 is transcendental

<t>Hmm,So I just rediscovered the prime constant, which is already proven irrational - in, er 1938 - Hardy and Wright, page 112, - thanks wileysw. How the f*ck did I miss that? And I demonstrated that I didn't do a first year analysis course - thanks cuch & outrun - but I can forgive myself as I...
by GrenvilleCroll
March 16th, 2015, 9:33 pm
Forum: Brainteaser Forum
Topic: Prove that E0 is transcendental
Replies: 15
Views: 7306

Prove that E0 is transcendental

<t>It seems obvious that E0 must be transcendental, else there exists a polynomial which has as one of its roots a number which expresses exactly the infinite pattern of the primes. I am hoping I have missed something blindingly obvious, or have failed to make a few simple connections between a few ...
by GrenvilleCroll
March 14th, 2015, 11:11 pm
Forum: Off Topic
Topic: Steak and Sex Day!!!
Replies: 90
Views: 121437

Steak and Sex Day!!!

<t>There was an open house night down at the local pub a little while ago. I printed out a couple of copies of the steak and sex day piece I posted at the beginning of this thread. A very cute female volunteer - a seasoned thespian - read the female piece. I then read the male bit. We alternated eac...
by GrenvilleCroll
March 14th, 2015, 10:55 pm
Forum: Brainteaser Forum
Topic: Prove that E0 is transcendental
Replies: 15
Views: 7306

Prove that E0 is transcendental

<t>Consider the non-negative natural numbers: 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19......encode primes as 1, the rest as 0E = 0,0,1,1,0,1,0,1,0,0,0,1,0,1,0,0,0,1,0,1....The number E0 is001.10101000101000101.... (ie the primes)E0 is irrational in every base due to a simple proof which sho...
by GrenvilleCroll
January 8th, 2015, 8:35 pm
Forum: Off Topic
Topic: The Eratosthenes Numbers
Replies: 0
Views: 2276

The Eratosthenes Numbers

Woof Woof!Great barks of joy following positive review comments.More later.
by GrenvilleCroll
November 17th, 2014, 7:38 pm
Forum: Off Topic
Topic: Research Mathematicians
Replies: 38
Views: 4918

Research Mathematicians

<t>QuoteOriginally posted by: CuchulainnQuoteOriginally posted by: katastrofaQuoteOriginally posted by: CuchulainnQuoteYour proof sounds more complex than mine. I win thanks to occam's razor and your lack of prior publication!Indeed.Talk is cheap. Publish or perish.Hanging something on the Web next ...
by GrenvilleCroll
November 13th, 2014, 6:50 pm
Forum: Off Topic
Topic: Research Mathematicians
Replies: 38
Views: 4918

Research Mathematicians

<t>QuoteOriginally posted by: outrunQuoteOriginally posted by: GrenvilleCrollI recently proved explicitly that the sequence of prime numbers is not periodic. Does that make me a bona fide research mathematician? you proved that every next prime number is larger than the previous one? Sounds indeed i...
by GrenvilleCroll
November 12th, 2014, 9:51 pm
Forum: Off Topic
Topic: Research Mathematicians
Replies: 38
Views: 4918

Research Mathematicians

I recently proved explicitly that the sequence of prime numbers is not periodic. Does that make me a bona fide research mathematician?
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