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Cuchulainn
Posts: 62898
Joined: July 16th, 2004, 7:38 am
Location: Amsterdam
Contact:

### Re: x?

Hold yer hosses, reduce the scope to 2d first and then review, Check against Green's formula prove things.

https://en.wikipedia.org/wiki/Green%27s_identities

BTW how does it work if I has mixed derivatives? $\partial_{xy}u$.
Step over the gap, not into it. Watch the space between platform and train.
http://www.datasimfinancial.com
http://www.datasim.nl

katastrofa
Posts: 9580
Joined: August 16th, 2007, 5:36 am
Location: Alpha Centauri

### Re: x?

I suspect it's something to do with $\frac{d^n}{dx^n} x^n = n!$, but I don't see how it gives the above.
$n$ is an integer? BTW have you sussed out fractional calculus.
Yes, n is an integer. As for the fractional calculus, we've decided to model those equations fully numerically in the end, but playing with them a bit gave in an idea of the parameter ranges for different system regimes. (Mathematics isn't the native tongue of my collaborators, so it didn't make sense to push that - they are agent-based experts though.)

Cuchulainn
Posts: 62898
Joined: July 16th, 2004, 7:38 am
Location: Amsterdam
Contact:

### Re: x?

I suspect it's something to do with $\frac{d^n}{dx^n} x^n = n!$, but I don't see how it gives the above.
$n$ is an integer? BTW have you sussed out fractional calculus.
Yes, n is an integer. As for the fractional calculus, we've decided to model those equations fully numerically in the end, but playing with them a bit gave in an idea of the parameter ranges for different system regimes. (Mathematics isn't the native tongue of my collaborators, so it didn't make sense to push that - they are agent-based experts though.)
Very wise
si fueris Romae, Romano vivito more; si fueris alibi, vivito sicut ibi
Step over the gap, not into it. Watch the space between platform and train.
http://www.datasimfinancial.com
http://www.datasim.nl

Collector
Topic Author
Posts: 4727
Joined: August 21st, 2001, 12:37 pm

### Re: x?

$\sqrt{MMCCCXXXVII}\approx 48.34$ ?

Cuchulainn
Posts: 62898
Joined: July 16th, 2004, 7:38 am
Location: Amsterdam
Contact:

### Re: x?

$\sqrt{MMCCCXXXVII}\approx 48.34$ ?
Know you know why the Romans never put a man on the Moon.

remember $e^5$?
Step over the gap, not into it. Watch the space between platform and train.
http://www.datasimfinancial.com
http://www.datasim.nl

Collector
Topic Author
Posts: 4727
Joined: August 21st, 2001, 12:37 pm

### Re: x?

$\sqrt{MMCCCXXXVII}\approx 48.34$ ?
Know you know why the Romans never put a man on the Moon.

remember $e^5$?
? Roman to me.
Screen Shot 2020-08-05 at 6.47.13 PM.png (10.81 KiB) Viewed 315 times

Cuchulainn
Posts: 62898
Joined: July 16th, 2004, 7:38 am
Location: Amsterdam
Contact:

### Re: x?

$\sqrt{MMCCCXXXVII}\approx 48.34$ ?
Know you know why the Romans never put a man on the Moon.

remember $e^5$?
? Roman to me.

Screen Shot 2020-08-05 at 6.47.13 PM.png
Step over the gap, not into it. Watch the space between platform and train.
http://www.datasimfinancial.com
http://www.datasim.nl

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