\( \newcommand{\N}{\mathbb{N}} \newcommand{\R}{\mathbb{R}} \newcommand{\C}{\mathbb{C}} \newcommand{\Q}{\mathbb{Q}} \newcommand{\Z}{\mathbb{Z}} \newcommand{\P}{\mathcal P} \newcommand{\B}{\mathcal B} \newcommand{\F}{\mathbb{F}} \newcommand{\E}{\mathcal E} \newcommand{\brac}[1]{\left(#1\right)} \newcommand{\abs}[1]{\left|#1\right|} \newcommand{\matrixx}[1]{\begin{bmatrix}#1\end {bmatrix}} \newcommand{\vmatrixx}[1]{\begin{vmatrix} #1\end{vmatrix}} \newcommand{\lims}{\mathop{\overline{\lim}}} \newcommand{\limi}{\mathop{\underline{\lim}}} \newcommand{\limn}{\lim_{n\to\infty}} \newcommand{\limsn}{\lims_{n\to\infty}} \newcommand{\limin}{\limi_{n\to\infty}} \newcommand{\nul}{\mathop{\mathrm{Nul}}} \newcommand{\col}{\mathop{\mathrm{Col}}} \newcommand{\rank}{\mathop{\mathrm{Rank}}} \newcommand{\dis}{\displaystyle} \newcommand{\spann}{\mathop{\mathrm{span}}} \newcommand{\range}{\mathop{\mathrm{range}}} \newcommand{\inner}[1]{\langle #1 \rangle} \newcommand{\innerr}[1]{\left\langle #1 \right \rangle} \newcommand{\ol}[1]{\overline{#1}} \newcommand{\toto}{\rightrightarrows} \newcommand{\upto}{\nearrow} \newcommand{\downto}{\searrow} \newcommand{\qed}{\quad \blacksquare} \newcommand{\tr}{\mathop{\mathrm{tr}}} \newcommand{\bm}{\boldsymbol} \newcommand{\cupp}{\bigcup} \newcommand{\capp}{\bigcap} \newcommand{\sqcupp}{\bigsqcup} \newcommand{\re}{\mathop{\mathrm{Re}}} \newcommand{\im}{\mathop{\mathrm{Im}}} \newcommand{\comma}{\text{,}} \newcommand{\foot}{\text{。}} \)

Sunday, March 25, 2012

完了

幾天前科大 reject 了我 mphil 的申請,而我亦沒有報讀其他的院校,半年前在想 334 應該會需要更多的人手負責教學,應該沒問題。但我期後聽某些教授說因為 "productivity"  之類的資源 ``計算" 方法,PGS  (Postgraduate Studentship) 被削減了,收生也不比上年多。

完了...,沒有 offer,沒有申請任何工作,也沒有考任何語文試,半年後的我會是怎樣呀......。難得辛辛苦苦二年學了不少知識 (第一年比較渾渾噩噩),好像都白讀了。可能半年後的我不會再接觸數學........。

Monday, March 12, 2012

哈哈...

科 number theory 走向變成 algebra course 的路線。上一堂講到對於 finite field $  F$,若 $  f\in F[X]$ 係 irreducible,$  F[X]/(f)$ 同樣係 finite field。因為以前冇乜點諗過呢類 example,開頭諗都係諗返有 division algorithm 云云,同覺得幾神奇,咁就證到 $  (f)$ 係 maximal。但其實我己經學過喺 PID 裏面所有 prime ideal 都係 maximal ...,而 $  (f)$ prime $  \iff$ $  f$ prime (i.e., irreducible in UFD) ...。學完又係唔記得!

Friday, March 2, 2012

Vocabulary

Cavalier (adj) 不經思考 (e.g. we shouldn't be completely cavalier in doing something)

In the sequel = In the following

haphazard (adj) 無計劃地 (it is not easy to haphazardly guess a functor that ...)

trump (verb) 勝過 e.g.:
You should always follow the style guide given to you by a particular publisher or company. That trumps everything else.

ironclad (adj) 不可打破、不可變動
I know there’re no ironclad rules regarding this subject.

dread to do something 不敢去想做某事 (因太可怕)

have yet to do something 仍未做某事

stubborn (adj.) 頑固

compromise (n.) 妥協方案

intricate (adj.) 難以理解

miraculously (adj.) 神奇地

gratuitous (adj.) 無必要的
e.g. The proof is gratuitously complicated.

honestly (adv.) 老實講