Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Here's some very interesting function:

I'm making plots now.

It's pity that I can't upload 3D .vrml format in the forum.

*Last edited by krassi_holmz (2006-03-02 23:03:41)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Here's some plot:

*Last edited by krassi_holmz (2006-03-02 23:31:08)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Here's some 3d:

*Last edited by krassi_holmz (2006-03-02 23:34:39)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

And here's the imaginery part:

*Last edited by krassi_holmz (2006-03-02 23:37:25)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

And my question: why this foundamental function is so complicated?

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Here's another: when x and y are negative the real part becomes to ostilate:

*Last edited by krassi_holmz (2006-03-02 23:42:18)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Then the immagineric part is ostilating too.

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,582

Very nice plots

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

What does the Capital Gamma letter mean?

Is it a product repeated with integers? If so, why are the plots continuous?

What does the exclamation point mean?

Is it factorial?

*Last edited by John E. Franklin (2006-03-03 04:17:30)*

**igloo** **myrtilles** **fourmis**

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

The exclamation point IS factorial

It looks quite strange, but actually it's one of the most inportant functions in the contemorary mathematics. There's an equation that connects it with the factorial:

Г(k+1)=k!

But Г is defined over all complex numbers. So that's the generalization of the factorial over the complex numbers.

But there's another too. It may be complex for some arguments so it's plot is 4d: 1 dimention for x, 1 for y, 1 for u and 1 for v, where

Г(x+iy)=u+iv.

That's why there 2 plots for my function: 1 for the real part of the rezult: Re(Г(xy+1)) and one for the imagineric: Im(Г(xy+1))

*Last edited by krassi_holmz (2006-03-03 08:27:52)*

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Can you point me to a link to read more about this subject?

I feel kind of dumb looking at this.

**igloo** **myrtilles** **fourmis**

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

You can start here:

Wikipedia

IPBLE: Increasing Performance By Lowering Expectations.

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

What made you interested in plotting x * y, and why wouldn't f(.25,.75) = f(.75,.25) ?

x * y = y * x, so where is your line of symmetry (y=x)?

**igloo** **myrtilles** **fourmis**

Offline

**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

???

I don't know.

I'll see.

Very interesting argument.

IPBLE: Increasing Performance By Lowering Expectations.

Offline

Pages: **1**