mathematics

Jung Hee Cheon

Jung Hee Cheon 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 Jung Hee Cheon rather than just read about it. In short: Jung Hee Cheon (born 1969) is a South Korean professor in the Department of Mathematical Sciences, the director of Industrial & Mathematical Data Analytics Research Center (IMDARC) at Seoul National University (SNU), and CEO of CryptoLab. His research interests include computational number theory, cryptology, and information security.

Key takeaways

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

Reference excerpt

Jung Hee Cheon (born 1969) is a South Korean professor in the Department of Mathematical Sciences, the director of Industrial & Mathematical Data Analytics Research Center (IMDARC) at Seoul National University (SNU), and CEO of CryptoLab. His research interests include computational number theory, cryptology, and information security. He is one of the co-inventors of HEaaN.

Education and career Born in South Korea, Cheon received his Bachelor of Arts, Master of Science, and Ph.D, all in Mathematics from KAIST in 1991, 1993, and 1997, respectively. Before joining SNU, he was a senior member of research staff at ETRI (1997–2000), a visiting scientist at Brown University (2000), and an assistant professor at ICU (2000-2003). Dr. Jung Hee Cheon is also one of the inventors of braid cryptography, a group-based cryptography scheme, and was previously known for his work on an efficient algorithm for the strong DH problem. Cheon is actively working on homomorphic encryptions and their applications, including machine learning, homomorphic control systems, and DNA computation on encrypted data.

Awards 2023: Fellow of the IACR 2022: Order of Service Merit (Green Stripes) 2022: Member of the KAST 2021: PKC Test-of-Time award 2020: Asian Scientist 100, Asian Scientist 2019: POSCO TJ Park Prize, POSCO TJ Park Foundation 2018: Scientist of the Month, Ministry of Science and ICT and National Research Foundation of Korea 2015: The best paper award in Eurocrypt 2008: The best paper award in Asiacrypt

Service Dr. Jung Hee Cheon has served as program chair and co-chair for multiple conferences, including ICISC 2008, ANTS-XI, Asiacrypt 2015/2016, MathCrypt 2013/2018/2019/2021, and PQC2021/2022. He was one of the two invited speakers at Asiacrypt 2020. He also contributes as an editor of the Journal of Cryptology.

References

External links Faculty page at Seoul National University Department of Mathematical Sciences

Illustrations

Worked examples

Example 1 — a first encounter with Jung Hee Cheon

Start with the simplest possible case. Write down what Jung Hee Cheon 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 Jung Hee Cheon 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 Jung Hee Cheon 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 Jung Hee Cheon

In research: Jung Hee Cheon 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 Jung Hee Cheon 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: Jung Hee Cheon is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1969 births, 20th-century South Korean mathematicians, 21st-century South Korean mathematicians, so understanding it makes those chapters shorter.
In everyday life: Look for Jung Hee Cheon 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 Jung Hee Cheon in 20 minutes

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

Frequently asked questions

What is Jung Hee Cheon in simple terms?

Why does Jung Hee Cheon 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 Jung Hee Cheon?

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 Jung Hee Cheon.