astronomy

Ryszard Horodecki

Ryszard Horodecki 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 Ryszard Horodecki rather than just read about it. In short: Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk. He contributed largely to the field of quantum informatics.

Key takeaways

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

Reference excerpt

Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk. He contributed largely to the field of quantum informatics. In his most widely cited paper, 'Separability of Mixed States: Necessary and Sufficient Conditions' written together with his sons, Michał and Paweł, he proposed the idea currently known as the Peres–Horodecki criterion. With over 12,000 citations, he is considered to be one of the leading Polish physicists.

Career He graduated from Department of Electronics, University of Gdańsk. Horodecki received his Ph.D. from Gdańsk University of Technology in 1976. Twenty-one years later, in 1997 he obtained his habilitation from Nicolaus Copernicus University in Toruń. His contribution to the quantum informatics were acknowledged in 2008, when he received the Prize of the Foundation for Polish Science in the field of mathematics and physics. In 2010 he became a member of Polish Academy of Sciences, whereas in 2011 received prestigious ERC Advanced Grant. Beyond scientific work, Horodecki publishes also poems in several Polish newspapers, particularly in Tygodnik Powszechny.

Personal life Horodecki's sons, Michał, Paweł, and Karol are also physicists working in Gdańsk with all of whom he jointly published the review article "Quantum entanglement".

Honours and awards Prize of the Foundation for Polish Science (2008) European Research Council Advanced Grant (2011)

Most influential publications Horodecki M., Horodecki P., Horodecki R., (1996) Separability of Mixed States: Necessary and Sufficient Conditions, Physics Letters A

References

External links Some information about Horodecki – Foundation for Polish Science webpage National Quantum Information Centre in Gdansk – Scientific Council Interview with Horodecki (in Polish) Horodecki in the database of Polish scientists (in Polish) Short clip about Horodecki made by Foundation for Polish Science Horodecki awarded a Two Million Euro European Research Council (ERC) grant] – news report Corresponding Members of the Polish Academy of Sciences

Worked examples

Example 1 — a first encounter with Ryszard Horodecki

Start with the simplest possible case. Write down what Ryszard Horodecki 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 Ryszard Horodecki 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 Ryszard Horodecki 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 Ryszard Horodecki

In research: Ryszard Horodecki 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 Ryszard Horodecki 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: Ryszard Horodecki is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1943 births, 20th-century Polish physicists, Academic staff of the University of Gdańsk, so understanding it makes those chapters shorter.
In everyday life: Look for Ryszard Horodecki 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 Ryszard Horodecki in 20 minutes

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

Frequently asked questions

What is Ryszard Horodecki in simple terms?

Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk. He contributed largely to the field of quantum informatics.

Why does Ryszard Horodecki 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 Ryszard Horodecki?

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 Ryszard Horodecki.