SERVING THE QUANTITATIVE FINANCE COMMUNITY

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by frenchX
June 28th, 2013, 8:33 am
Forum: Off Topic
Topic: The fight club of Video game
Replies: 1
Views: 6492

The fight club of Video game

In this huge market where Nintendo, Microsoft and Sony rule there are several contenders which want to penetrate. As example Apple, Google and Nvidia are developping their own console but also a kickstarter project crowd funded named Ouya.Be ready for hypercompetition...
by frenchX
June 27th, 2013, 12:12 pm
Forum: Brainteaser Forum
Topic: Find a prime number of the form 123456...n
Replies: 14
Views: 10691

Find a prime number of the form 123456...n

Could you detail a bit your method and your graph to obtain 106 and others please ?
by frenchX
June 26th, 2013, 5:53 am
Forum: Off Topic
Topic: skin gender (soft story)
Replies: 89
Views: 8920

skin gender (soft story)

Actually I think that everybody has a "father or mother instinct". It's just that you were uneasy because it was not your child. It's a question of natural survival instinct I guess.
by frenchX
June 24th, 2013, 12:28 pm
Forum: Brainteaser Forum
Topic: Find a prime number of the form 123456...n
Replies: 14
Views: 10691

Find a prime number of the form 123456...n

The question is simple:Consider a sequence of number such this one 1121231234so a[n]=a[n-1] concatenated with nIs there a prime number among this list of a[n]?Example 123 is not a prime (3*41) nor 1234567 (127*9721). So?
by frenchX
June 7th, 2013, 7:14 am
Forum: Economics Forum
Topic: good comedy in europe
Replies: 114
Views: 23276

good comedy in europe

Here is how US thinker of Harvard see the Europe. A failed experiment ...The european union: a failed experiment
by frenchX
June 7th, 2013, 7:06 am
Forum: Economics Forum
Topic: The mathematics of elections
Replies: 26
Views: 9700

The mathematics of elections

What about about "vote hedging"? "Sure I'll vote for you but I don't want to carry the risk of you not being electing so please make a small financial incentive". oups I think it's called corruption More seriously I would think about a agent model with utility maximization for this one.
by frenchX
June 6th, 2013, 7:48 am
Forum: Off Topic
Topic: News from Outer Space
Replies: 1204
Views: 145369

News from Outer Space

I used this in my work very instructive.NASA space lidar history
by frenchX
May 31st, 2013, 5:40 am
Forum: Off Topic
Topic: Autism
Replies: 100
Views: 10907

Autism

<t>QuoteOriginally posted by: exneratunriskQuoteOriginally posted by: frenchXMy score: 7. I used to be very analytic and abstract minded when I was young but with age I tend to evolve more to the "social interaction and communicative" side. Maybe one could design a test to measure those 5 facets:1) ...
by frenchX
May 30th, 2013, 2:35 pm
Forum: Off Topic
Topic: Autism
Replies: 100
Views: 10907

Autism

<t>My score: 7. I used to be very analytic and abstract minded when I was young but with age I tend to evolve more to the "social interaction and communicative" side. Maybe one could design a test to measure those 5 facets:1) Emotional intelligence and social interactions2) Use of imagination and cr...
by frenchX
May 28th, 2013, 6:41 am
Forum: Economics Forum
Topic: end of the run for silicon valley?
Replies: 6
Views: 8729

end of the run for silicon valley?

<t>Softwares don't require big fixed investments. You just need a computer. Tangible product development like a car requires huge capex. Imagine the cost of building a new plane or a new medicine and compare it to the cost of building Facebook (cost from the R&D to the market production). There ...
by frenchX
May 23rd, 2013, 2:45 pm
Forum: Off Topic
Topic: First Annual Wilmott Quiz Team Brownian Bridge Event (May 16-17, 2013)
Replies: 767
Views: 24693

First Annual Wilmott Quiz Team Brownian Bridge Event (May 16-17, 2013)

QuoteOriginally posted by: exneratunriskA year from now, I see 5 Wilmotters .... Well I have to confess that there was a kind of exponential dampening of the forum activity in the late 2012-2013. Maybe "quant finance" is not hype anymore...
by frenchX
May 21st, 2013, 12:44 pm
Forum: Brainteaser Forum
Topic: Hard brainteaser: how to optimally park a car?
Replies: 46
Views: 11390

Hard brainteaser: how to optimally park a car?

<t>WoW impressive work guys !I agree with Paul that putting a bigger weight in the merit function for forward motion would be better because it could be hard to drive backward. Moreover there is an important parameter I forgot to mention: the width of the road lane. indeed, if your optimal solution ...
by frenchX
May 16th, 2013, 1:37 pm
Forum: Brainteaser Forum
Topic: golden presse papier
Replies: 9
Views: 8318

golden presse papier

What happen if the postman steals the box ? Maybe the safest thing is to take a secured delivery service with a strong insurance policy.
by frenchX
May 16th, 2013, 12:06 pm
Forum: Brainteaser Forum
Topic: simple geometric logical properties
Replies: 3
Views: 8252

simple geometric logical properties

that's not the theorem which says that you can't create a pure spherical magnetic field ? (so the confinement is a torus) I think there is a relation between the Borsuk Ulam theorem, the Brouwer fixed point one and the hairy ball one (the last one is for the mpagnetic confinement problem).
by frenchX
May 16th, 2013, 8:07 am
Forum: Brainteaser Forum
Topic: Hard brainteaser: how to optimally park a car?
Replies: 46
Views: 11390

Hard brainteaser: how to optimally park a car?

<t>@Outrun and Bluetrin: The target distance could be the mean distance of the 4 wheels. I was also considering the "simpler" problem of the distance of the center of the car. And yes this is a VERY hard problem.@Paul: Indeed, minimizing the time or even the fuel consumption could be target merit fu...
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