# 梅花間竹 2

「梅花間竹」有什麼好處呢？

「梅花間竹」不但可以化解這兩個問題，而且還有其他的大好處：

— Me@2010.07.25

— Me@2010.07.24

# T-duality

Type IIA and Type IIB

The Type IIA string theory and the Type IIB string theory were known to be connected by T-duality; this essentially meant that the IIA string theory description of a circle of radius R is exactly the same as the IIB description of a circle of radius 1/R, where distances are measured in units of the Planck length.

— Wikipedia on M-theory

2010.07.24 Saturday ACHK

# Bo Peep

.

Bo Peep does not appear in Toy Story 3. It is implied that sometime between the events of Toy Story 2 and Toy Story 3, Bo was sold in a yard sale with her Sheep. The only toy to mention her was Rex when the remaining toys remember their friends who are no longer with them. When Rex says her name, it is apparent that Woody is still saddened and hurt over her loss. However, she appears only as a background toy in archive footage at the beginning of the film during a home video montage of Andy as a child.

— Wikipedia on List of Toy Story characters

.

.

.

2010.07.24 Saturday $ACHK$

— Me@2010.07.21

# Matrix string theory 2

In physics, M(atrix) theory (also known as BFSS-Matrix theory) is a fundamental formulation of M-theory as a Random matrix model. It is written in terms of interacting D0-branes (zero-dimensional Dirichlet branes) in infinite momentum frame. It was proposed by Banks, Fischler, Shenker, and Susskind in 1996. See also the discussion in M-theory.

Matrix String Theory

Matrix string theory is a set of equations that describe superstring theory in a non-perturbative framework. Matrix string theory is related to M(atrix) theory in the same sense that superstring theory is related to M-theory. Type IIA string theory can be shown to be equivalent to a maximally supersymmetric two-dimensional gauge theory, the gauge group of which is U(N) for a large value of N. This Matrix string theory was first proposed by Lubos Motl in 1997 and later independently in a more complete paper by Robbert Dijkgraaf, Erik Verlinde, and Herman Verlinde. Another matrix string theory equivalent to Type IIB string theory was constructed in 1996 by Ishibashi, Kawai, Kitazawa and Tsuchiya. This version is known as the IKKT matrix model.

— Wikipedia on Matrix string theory

2010.07.23 Friday ACHK

# Dog 2

.

Intellect is invisible to the man who has none.

— Arthur Schopenhauer

.

Kindness is invisible to the man who has none.

— Me@2010.07.22

.

If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.

— Mark Twain

.

.

.

2010.07.23 Friday $copyright ACHK$

# 梅花間竹

「梅花間竹」有什麼好處呢？

— Me@2010.07.22

In particle physics, a hadron (pronounced /?hadr?n/, from the Greek: ?δρ??, hadros, “stout, thick”) is a composite particle made of quarks held together by the strong force (similarly to how atoms and molecules are held together by the electromagnetic force). Hadrons are categorized into two families: baryons (made of three quarks), and mesons (made of one quark and one antiquark).

Note that the mass of a hadron has very little to do with the mass of its valence quarks; rather, due to mass–energy equivalence, most of the mass comes from the large amount of energy associated with the strong interaction.

2010.07.22 Thursday ACHK

# Buddha

.

Buddha

= the enlightened one

= 開悟的人

— Me@2010.07.22

.

Buddha is the one who has realized that he already has (almost) everything he wants.

— Me@2007

.

.

.

2010.07.22 Thursday $copyright ACHK$

# 傳世之作 2

（安：根據「Dilbert test」，如果一般人也有足夠程度，欣賞你的文章的話，你的文章大概不會是超凡的文章。相反，絕大部人也不懂欣賞的話，你的文章就有可能是傳世之作。）

… 或者是垃圾作品。

— Me@2010.07.20

Intellect is invisible to the man who has none.

— Arthur Schopenhauer

To be great is to be misunderstood.

— Ralph Emerson

# 自我虛級化

Publish! 2

.

Self-de-centralization is the best way to backup yourself.

— Me@2010.07.20

.

.

.

2010.07.21 Wednesday $copyright ACHK$

# Dilbert test

Dogbert: All great ideas look like bad ideas to people who are losers. It’s always good to test a new idea with known losers to make sure they don’t like it.

— Me@2010.07.21

2010.07.21 Wednesday ACHK

# M-theory 3

In late 2007, Bagger and Lambert set off renewed interest in M-theory with the discovery of a candidate Lagrangian description of coincident M2-branes, based on a non-associative generalization of Lie Algebra, Nambu 3-algebra or Filippov 3-algebra. Practitioners hope the Bagger-Lambert-Gustavsson action will provide the long-sought microscopic description of M-theory.

— Wikipedia on M-theory

2010.07.20 Tuesday ACHK

# Benjamin Franklin

.

If you wou’d not be forgotten as soon as you are dead and rotten, either write things worth reading, or do things worth the writing.

— Benjamin Franklin

.

.

.

2010.07.20 Tuesday $ACHK$

# 縱波橫波化 4

the wave itself

displacement-distance graph

displacement-distance graph

the wave itself

— Me@2010.07.20

# Open strings and closed strings

Superstring theory 4

String theory includes both open strings, which have two distinct endpoints, and closed strings making a complete loop. The two types of string behave in slightly different ways, yielding two different spectra. For example, in most string theories, one of the closed string modes is the graviton, and one of the open string modes is the photon. Because the two ends of an open string can always meet and connect, forming a closed string, there are no string theories without closed strings.

— Wikipedia on String theory

2010.07.19 Monday ACHK

# 傷逝 6

.

Toy Story (Age: 15)

Toy Story 2 (Age: 19)

Toy Story 3 (Age: 30)

— Me@2010.07.17

.

.

— Me@2010.07.19

.

.

.

2010.07.19 Monday $copyright ACHK$

# 個人大組織 6

（安：你以前用「即時通訊軟件」（Instant Messaging）傳送過給我。）

（安：你的意思是，「人是瘋狂的怪獸」這一句，比「人是理性的動物」有更大的解釋力？）

（安：「人是理性的動物」都有解釋能力，但是它只能解釋到小部分的現象。而「人是瘋狂的怪獸」卻能解釋到大部分的現象。）

— Me@2010.07.19