astronomy

Petra Mutzel

Petra Mutzel 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 Petra Mutzel rather than just read about it. In short: Petra Mutzel is a German computer scientist, a University Professor of computer science at the University of Bonn. Her research is in the areas of algorithm engineering, graph drawing and combinatorial optimization.

Key takeaways

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

Reference excerpt

Petra Mutzel is a German computer scientist, a University Professor of computer science at the University of Bonn. Her research is in the areas of algorithm engineering, graph drawing and combinatorial optimization.

Education and career Mutzel earned a diploma in 1990 from the University of Augsburg, in mathematics with computer science. She then earned a doctorate in computer science from the University of Cologne in 1994 under the supervision of Michael Jünger, and her habilitation in 1999 from the Max Planck Institute for Informatics. She held a professorship at the Vienna University of Technology beginning in 1999, moving to the Technical University of Dortmund in 2004 and then to the University of Bonn in 2019.

Contributions In graph drawing, Mutzel has contributed in work on planarization, crossing minimization in layered graph drawing, and SPQR trees, and co-edited a book on graph drawing. She was both the program chair and organizational chair of the 9th International Symposium on Graph Drawing, in Vienna in 2001. Mutzel's other contributions include works on the Ising model, steganography, and Steiner trees. In 2012, she was program committee co-chair of the Meeting on Algorithm Engineering and Experiments (ALENEX).

Selected publications De Simone, C.; Diehl, M.; Jünger, M.; Mutzel, P.; Reinelt, G.; Rinaldi, G. (July 1995), "Exact ground states of Ising spin glasses: New experimental results with a branch-and-cut algorithm", Journal of Statistical Physics, 80 (1–2): 487–496, Bibcode:1995JSP....80..487D, CiteSeerX 10.1.1.30.4226, doi:10.1007/BF02178370, S2CID 9364389 {{citation}}: Cite uses deprecated parameter |citeseerx= (help). Jünger, M.; Mutzel, P. (1996), "Maximum planar subgraphs and nice embeddings: practical layout tools", Algorithmica, 16 (1): 33–59, CiteSeerX 10.1.1.41.3987, doi:10.1007/s004539900036, MR 1394493 {{citation}}: Cite uses deprecated parameter |citeseerx= (help). Jünger, Michael; Mutzel, Petra (1997), "2-layer straightline crossing minimization: performance of exact and heuristic algorithms", Journal of Graph Algorithms and Applications, 1 (1): 1–25, CiteSeerX 10.1.1.41.9180, doi:10.7155/jgaa.00001, MR 1478845, S2CID 782954 {{citation}}: Cite uses deprecated parameter |citeseerx= (help). Gutwenger, Carsten; Mutzel, Petra (2001), "A linear time implementation of SPQR-trees", Graph Drawing: 8th International Symposium, GD 2000 Colonial Williamsburg, VA, USA, September 20–23, 2000, Proceedings, Lecture Notes in Computer Science, vol. 1984, Berlin: Springer-Verlag, pp. 77–90, doi:10.1007/3-540-44541-2_8, ISBN 978-3-540-41554-1. Jünger, Michael; Mutzel, Petra, eds. (2004), Graph Drawing Software, Mathematics and Visualization, Berlin: Springer-Verlag, doi:10.1007/978-3-642-18638-7, ISBN 978-3-540-00881-1, MR 2159308. Hetzl, Stefan; Mutzel, Petra (2005), "A graph–theoretic approach to steganography", Communications and Multimedia Security: 9th IFIP TC-6 TC-11 International Conference, CMS 2005, Salzburg, Austria, September 19 – 21, 2005, Proceedings, Lecture Notes in Computer Science, vol. 3677, Berlin: Springer-Verlag, pp. 119–128, doi:10.1007/11552055_12, ISBN 978-3-540-28791-9. Ljubić, Ivana; Weiskircher, René; Pferschy, Ulrich; Klau, Gunnar W.; Mutzel, Petra; Fischetti, Matteo (2006), "An algorithmic framework for the exact solution of the prize-collecting Steiner tree problem", Mathematical Programming, 105 (2–3, Ser. B): 427–449, CiteSeerX 10.1.1.219.5353, doi:10.1007/s10107-005-0660-x, MR 2190829, S2CID 10535226 {{citation}}: Cite uses deprecated parameter |citeseerx= (help).

References

Worked examples

Example 1 — a first encounter with Petra Mutzel

Start with the simplest possible case. Write down what Petra Mutzel 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 Petra Mutzel 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 Petra Mutzel 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 Petra Mutzel

In research: Petra Mutzel 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 Petra Mutzel 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: Petra Mutzel is common in secondary-school and first-year university syllabi. It links to neighbouring topics Academic staff of TU Wien, Academic staff of the Technical University of Dortmund, German computer scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Petra Mutzel 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 Petra Mutzel in 20 minutes

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

Frequently asked questions

What is Petra Mutzel in simple terms?

Why does Petra Mutzel 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 Petra Mutzel?

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 Petra Mutzel.