眾所周知,對(duì)于想通過(guò)學(xué)術(shù)亮點(diǎn)進(jìn)入前20名校的學(xué)生來(lái)說(shuō),能申請(qǐng)到一個(gè)非常具有含金量的項(xiàng)目,論證自己的學(xué)術(shù)能力非常重要,幾乎可以說(shuō)“一只腳已經(jīng)踏入了藤校”。夏校就是一個(gè)很好的背景提升項(xiàng)目。夏校課程大多都是以美國(guó)學(xué)校為基地,由本校的老師上課,擁有成熟固定的課程供大家選擇,涉及的內(nèi)容包括ESL、科學(xué)、體育、藝術(shù)等等。越來(lái)越多準(zhǔn)備出國(guó)留學(xué)的高中生,利用暑假去美國(guó)讀暑校,為自己的美本申請(qǐng)?zhí)硪环葜Α?/p>
2022年羅斯數(shù)學(xué)訓(xùn)練營(yíng)已開(kāi)放申請(qǐng)。為了保持羅斯?fàn)I精神的傳承,羅斯組委會(huì)經(jīng)過(guò)討論,決定取消線上營(yíng)。由于疫情防控和出入境管理政策,暫停舉辦2022羅斯亞洲營(yíng)。在美國(guó)開(kāi)放兩個(gè)線下?tīng)I(yíng)地,每個(gè)營(yíng)地招收60名新生。受疫情防控和出入境管理政策影響,境外學(xué)生可能無(wú)法申請(qǐng)美國(guó)營(yíng)。
申請(qǐng)須知
2022年4月1日(美東時(shí)間),羅斯數(shù)學(xué)訓(xùn)練營(yíng)招生委員會(huì)將開(kāi)始選拔申請(qǐng)者,陸續(xù)發(fā)放郵件,告知申請(qǐng)者的錄取結(jié)果。
申請(qǐng)?zhí)峤唤刂谷掌跒?022年3月31日(美東時(shí)間),因此建議大家盡早提交申請(qǐng)資料。
以下為Ross官網(wǎng)發(fā)布的2022年部分?jǐn)?shù)學(xué)題:
The number systems Z and Zm (for a positive integer m) were defined in the previous
problem. We also use the notations:
Q is the system of rational numbers.
4Z is the set of multiples of 4 in Z. Similarly for 4Z12.
Consider the following number systems:
Z, Q, 4Z, Z3, Z8, Z9, 4Z12, Z13.
One system may be viewed as similar to another in several different ways.
(a) Let’s measure similarity using algebraic properties. First consider the following
sample properties:
(i) If a2 = 1, then a = ±1.
(ii) If 2x = 0, then x = 0.
(iii) If c2 = 0, then c = 0.
Which of the systems above have properties (i), (ii), and/or (iii)?
(b) Formulate another algebraic property and determine which of those systems have
that property.
Write down some additional algebraic properties and investigate them.
(c) In your opinion, which of the listed systems are “most similar” to each another?
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