Collatz conjectur

Collatz conjectur

The Collatz conjecture is an unsolved conjecture in mathematics named after Lothar Collatz, who first proposed it in 1937. The conjecture is also known as the 3n + 1 conjecture, the Ulam conjecture (after Stanisław Ulam), Kakutani’s problem (after Shizuo Kakutani), Thwaites conjecture (after Sir Bryan Thwaites), Hasse’s algorithm (after Helmut Hasse) or the Syracuse problem;[1] the sequence of numbers involved is referred to as the hailstone sequence or hailstone numbers,[2] or as wondrous numbers.[3] – from http://en.wikipedia.org/wiki/Collatz_conjecture

The problem is here: http://online-judge.uva.es/p/v1/100.html

My solution not using STL is as below:

Running OS-X on VMWare

I spent two days trying to install Snow Leopard(10.6.3) and iPhone SDK(3.2) on VMWare. It works very well with sound, display, iPhone, and Xcode like as below. The only problem is the speed to run applications, though VMware 7 operates dramatically faster than VMWare 6.

I think it would be more nice to buy real mac. But it seems to be not bad to learn Cocoa and iPhone programming on VMWare, if you don’t have enough money to get real one like me.

Go here if you want to try on your PC: http://bit.ly/cvn0Aj

Various ideas with Android

Kiss the Rain (just practice)

It’s sad song. It is so sad. :D

Is A Person A Physical System?

What kind of thing is a person? The nature of persons is a very complex concept which has not yet definitely resolved. Basically, there are two kind of views has been given scholarly considerable attention: Dualism vs Physicalism.

Physicalism is the thesis that everything is physical, or as contemporary philosophers sometimes put it, that everything supervenes on, or is necessitated by, the physical. (more)

On the physicalist view, a person is just body. In other words, you and me both are exactly no more and no less than material.

A conclusion reached in consideration of the following lecture by Professor Shelly Kagan is we are not a purely physical system;

1. We have free will.
2. Nothing subject to determinism has free will.
3. All purely physical systems are subject to determinism.

So how do you think about this?

But this is not the end of argument, just beginning has done. The debate about Compatibilism (which is the belief that free will and determinism are compatible ideas, and that it is possible to believe both without being logically inconsistent) and Incompatibilism (which is the opposite side  of the former) has also been raised as to the nature of human being.