Friday, December 30, 2005

My Life and Loves

written by Frank Harris about youth life.
very glad that I have found such a book. very enjoyable for reading. a great book...
Quoted..

Live out your whole free life, while yet on earth,
Seize the quick Present, prize your one sure boon:
Though brief, each day a golden sun has birth
Though dim, the night is gemmed with stars and moon."

Monday, December 26, 2005

QM

from Hilbert space to Fock space, from von Neumann matrix to reduced density matrix, from Lie algebra and Jordan algebra to Kummer variety, from number field to prime numbers, from random matrix to Riemann zeros, what is the underlying relationship in action? Of course, none of them have been easy to tackle. Is the relationship recognizable in some conventional sense? Definitely, the structure or the geometry of the problem needs to be well understood. Should it wait the coming the QuantumComputer, which finally tames the NP problem? Or at least, we may peek something inside, which is extraordinarily splendid?
A. Connes said something like this: all branches of mathematics are connected, which is quite different from other subjects of science.

Scale of Distance

from planck length (1.6*^-35 meters) to the radius of current observable universe (1.3*10^26 meters)
http://math.ucr.edu/home/baez/distances.html

Monday, December 19, 2005

Illusions

Challenging your eyes, and your mind too!!
from Scientific America

Twisted??
Cubic network??
Spiral snailshell??


Pesudosprial


Straight or not??

Impossible Tribar