mathematics

Guan Zhaozhi

Guan Zhaozhi is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Guan Zhaozhi rather than just read about it. In short: Guan Zhaozhi (Chinese: 关肇直; February 13, 1919 – November 12, 1982) was a Chinese mathematician. He was a member of the Chinese Academy of Sciences.

Key takeaways

Guan Zhaozhi belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Guan Zhaozhi to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Guan Zhaozhi from memory before moving on to harder problems.

Reference excerpt

Guan Zhaozhi (Chinese: 关肇直; February 13, 1919 – November 12, 1982) was a Chinese mathematician. He was a member of the Chinese Academy of Sciences. In 1962, Guan and Song Jian were recruited by Qian Xuesen to establish China's first cybernetics laboratory with him.

Personal life His younger male cousin Guan Zhaoye was an architect and member of the Chinese Academy of Engineering (CAE).

References

"Preface". Journal of Systems Science and Complexity. 22 (4): 541. December 2009. doi:10.1007/s11424-009-9185-3. S2CID 219555554.

Worked examples

Example 1 — a first encounter with Guan Zhaozhi

Start with the simplest possible case. Write down what Guan Zhaozhi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Guan Zhaozhi before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Guan Zhaozhi ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Guan Zhaozhi

In research: Guan Zhaozhi appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Guan Zhaozhi in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Guan Zhaozhi is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1919 births, 1982 deaths, 20th-century Chinese mathematicians, so understanding it makes those chapters shorter.
In everyday life: Look for Guan Zhaozhi outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Guan Zhaozhi in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Guan Zhaozhi means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Guan Zhaozhi out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Guan Zhaozhi in simple terms?

Guan Zhaozhi (Chinese: 关肇直; February 13, 1919 – November 12, 1982) was a Chinese mathematician. He was a member of the Chinese Academy of Sciences.

Why does Guan Zhaozhi matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Guan Zhaozhi?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Guan Zhaozhi.