astronomy

Wilfried Imrich

Wilfried Imrich 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 Wilfried Imrich rather than just read about it. In short: Wilfried Imrich (born 25 May 1941) is an Austrian mathematician working mainly in graph theory. He is known for his work on graph products, and authored the books Product Graphs: Structure and Recognition (Wiley, 2000, with Sandi Klavžar), Topics in graph theory: Graphs and their Cartesian Products (AK Peters, 2008, with Klavžar and Douglas F.

Key takeaways

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

Reference excerpt

Wilfried Imrich (born 25 May 1941) is an Austrian mathematician working mainly in graph theory. He is known for his work on graph products, and authored the books Product Graphs: Structure and Recognition (Wiley, 2000, with Sandi Klavžar), Topics in graph theory: Graphs and their Cartesian Products (AK Peters, 2008, with Klavžar and Douglas F. Rall), and Handbook of Product Graphs (2nd ed., CRC, 2011, with Klavžar and Richard Hammack). Imrich earned his doctorate from the University of Vienna in 1965, under the joint supervision of Nikolaus Hofreiter and Edmund Hlawka. He has worked as a researcher for IBM in Vienna, as an assistant professor at TU Wien and the University at Albany, SUNY, as a postdoctoral researcher at Lomonosov University, and, since 1973, as a full professor at the University of Leoben in Austria. He retired in 2009, becoming a professor emeritus at Leoben. He is on board of advisors of the journal Ars Mathematica Contemporanea. Since 2012 he has been a member of the Academia Europaea.

References

External links Personal web site "Wilfried Imrich's 75th Birthday Colloquium", Sandi Klavžar, Ars Math Contemp 11(2016) XXI

Worked examples

Example 1 — a first encounter with Wilfried Imrich

Start with the simplest possible case. Write down what Wilfried Imrich 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 Wilfried Imrich 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 Wilfried Imrich 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 Wilfried Imrich

In research: Wilfried Imrich 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 Wilfried Imrich 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: Wilfried Imrich is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1941 births, 20th-century Austrian mathematicians, 21st-century Austrian mathematicians, so understanding it makes those chapters shorter.
In everyday life: Look for Wilfried Imrich 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 Wilfried Imrich in 20 minutes

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

Frequently asked questions

What is Wilfried Imrich in simple terms?

Why does Wilfried Imrich 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 Wilfried Imrich?

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 Wilfried Imrich.