astronomy

Sun Yeneng

Sun Yeneng is a astronomy 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 Sun Yeneng rather than just read about it. In short: Sun Yeneng is Goh Keng Swee Professor of Economics and Professor of Mathematics at the National University of Singapore (NUS). Sun received his B.S. from University of Science and Technology of China in 1983 and his M.S. and Ph.D. from University of Illinois at Urbana-Champaign respectively in 1985 and 1989.

Key takeaways

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

Reference excerpt

Sun Yeneng is Goh Keng Swee Professor of Economics and Professor of Mathematics at the National University of Singapore (NUS). Sun received his B.S. from University of Science and Technology of China in 1983 and his M.S. and Ph.D. from University of Illinois at Urbana-Champaign respectively in 1985 and 1989. He joined NUS as a lecturer at the Department of Mathematics in 1989 and was promoted to professor in 2002. He was Raffles Professor of Social Sciences at the Department of Economics in NUS from 2009 to 2015. Sun was formerly appointed as acting head and head in the Department of Economics in 2008 to 2012. He has been Dean of Faculty of Science from 1 July 2020.

Research Interests Sun's research interests include mathematical economics, analysis and probability theory.

Selected works Chen, Yi-Chun; He, Wei; Li, Jiangtao; Sun, Yeneng (2019). "Equivalence of stochastic and deterministic mechanisms". Econometrica. 87 (4): 1367–1390. doi:10.3982/ECTA14698. S2CID 200061254. Keisler, H. Jerome; Sun, Yeneng (2009). "Why saturated probability spaces are necessary". Advances in Mathematics. 221 (5): 1584–1607. doi:10.1016/j.aim.2009.03.003. Duffie, Darrell; Sun, Yeneng (2007). "Existence of independent random matching". Annals of Applied Probability. 17 (1): 386–419. arXiv:math/0703034. doi:10.1214/105051606000000673. Sun, Yeneng (2006). "The exact law of large numbers via Fubini extension and characterization of insurable risks". Journal of Economic Theory. 126 (1): 31–69. doi:10.1016/j.jet.2004.10.005. Khan, M. Ali; Sun, Yeneng (2002). "Non-cooperative games with many players". Handbook of Game Theory with Economic Applications. Vol. 3. pp. 1761–1808. doi:10.1016/S1574-0005(02)03009-6. ISBN 9780444894281. Sun, Yeneng (1998). "The almost equivalence of pairwise and mutual independence and the duality with exchangeability". Probability Theory and Related Fields. 112 (3): 425–456. doi:10.1007/s004400050196.

Awards and honors Sun has been an Economic Theory Fellow of the Society for the Advancement of Economic Theory since 2011, and a Fellow of the Singapore National Academy of Science since 2014.

References

External links Homepage at NUS

Worked examples

Example 1 — a first encounter with Sun Yeneng

Start with the simplest possible case. Write down what Sun Yeneng claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Sun Yeneng 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 Sun Yeneng 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 Sun Yeneng

In research: Sun Yeneng appears in astronomy 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 Sun Yeneng 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: Sun Yeneng is common in secondary-school and first-year university syllabi. It links to neighbouring topics Academic staff of the National University of Singapore, Asian mathematician stubs, Asian scientist stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Sun Yeneng 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 Sun Yeneng in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sun Yeneng 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 Sun Yeneng out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sun Yeneng in simple terms?

Why does Sun Yeneng matter?

Because it connects several astronomy 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 Sun Yeneng?

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 Sun Yeneng.