astronomy

Philippe Michel (economist)

Philippe Michel (economist) 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 Philippe Michel (economist) rather than just read about it. In short: Philippe Michel (6 October 1937 – 22 July 2004) was a French mathematical economist. From mathematics to mathematical economics Philippe Michel earned a PhD in Mathematics from the University of Paris VI in 1972, and became a Professor of Mathematics in 1976 at the University of Paris I.

Key takeaways

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

Reference excerpt

Philippe Michel (6 October 1937 – 22 July 2004) was a French mathematical economist.

From mathematics to mathematical economics Philippe Michel earned a PhD in Mathematics from the University of Paris VI in 1972, and became a Professor of Mathematics in 1976 at the University of Paris I. In 1993, he joined the Faculty of Economics at the University of Aix-Marseille II at GREQAM. Philippe Michel first scientific contributions were in the field of mathematics, with a focus on optimal control theory. As the methods developed in this field are important tools used in economics, Philippe Michel progressively entered into this field. A list of his contribution to mathematics is provided in an article by Jean-Paul Penot.

Contributions to economics Philippe Michel's contribution to economics is both related to macroeconomics and public economics. His reference framework is the growth model, viewed as a succession of different generations. The numerous contributions can be classified according to three main topics. First, Philippe Michel studies the problem of the choice of a social welfare function that allows defining the social optimum. Second, when the social optimum has been characterized, its decentralization can be achieved in various frameworks where different types of frictions or externalities may come from environment, education, money, etc. Finally, applying an economic policy may imply two problems : the problem of the inconsistency of the optimal policy, and the question of the neutrality of transfers, when agents are altruistic.

Prize Philippe Michel Philippe Michel died on 22 July 2004. Jean-Michel Grandmont published an obituary stressing that his prolific scientific contributions were a reflection of his character: original and deep thinking, intellectual honesty. Through his publications, he still has an important place in economic research. The role he played in advising numerous young researchers over the years has led his friends to honor him through the award of a young researcher prize for the best paper on economic dynamics on the fifth anniversary of his death.

Books published Philippe Michel published several books in French. In English: A Theory of Economic Growth, Dynamics and Policy in Overlapping Generations (with D. de la Croix), Cambridge University Press, 2002.

References

Worked examples

Example 1 — a first encounter with Philippe Michel (economist)

Start with the simplest possible case. Write down what Philippe Michel (economist) 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 Philippe Michel (economist) 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 Philippe Michel (economist) 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 Philippe Michel (economist)

In research: Philippe Michel (economist) 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 Philippe Michel (economist) 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: Philippe Michel (economist) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1937 births, 2004 deaths, Academic staff of Aix-Marseille University, so understanding it makes those chapters shorter.
In everyday life: Look for Philippe Michel (economist) 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 Philippe Michel (economist) in 20 minutes

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

Frequently asked questions

What is Philippe Michel (economist) in simple terms?

Philippe Michel (6 October 1937 – 22 July 2004) was a French mathematical economist. From mathematics to mathematical economics Philippe Michel earned a PhD in Mathematics from the University of Paris VI in 1972, and became a Professor of Mathematics in 1976 at the University of Paris I.

Why does Philippe Michel (economist) 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 Philippe Michel (economist)?

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 Philippe Michel (economist).