Pierre Vidal – författare
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21 produkter
21 produkter
Inbunden, Franska, 2022
459 kr
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Häftad, Franska, 2022
345 kr
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Inbunden, Franska, 2022
455 kr
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Häftad, Franska, 2022
348 kr
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Häftad, Engelska, 2025
231 kr
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Inbunden, Engelska, 2025
400 kr
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Häftad, Engelska, 2025
262 kr
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Inbunden, Engelska, 2025
416 kr
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- Nyhet
308 kr
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- Nyhet
Häftad, Engelska, 2026
323 kr
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Häftad, Franska, 2011
290 kr
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Häftad, Franska, 2013
277 kr
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Häftad, Engelska, 2011
331 kr
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Häftad, Engelska, 2011
544 kr
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Many facts were at the origin of the present monograph. The ftrst is the beauty of maple leaves in Quebec forests in Fall. It raised the question: how does nature create and reproduce such beautiful patterns? The second was the reading of A. Lindenmayer's works on L systems. Finally came the discovery of "the secrets of DNA" together with many stimulating ex changes with biologists. Looking at such facts from the viewpoint of recursive numerical systems led to devise a simple model based on six elementary operations organized in a generating word, the analog of the program of a computer and of the genetic code of DNA in the cells of a living organism. It turned out that such a model, despite its simplicity, can account for a great number of properties of living organisms, e.g. their hierarchical structure, their ability to regenerate after a trauma, the possibility of cloning, their sensitivity to mutation, their growth, decay and reproduction. The model lends itself to analysis: the knowledge of the generating word makes it possible to predict the structure of the successive developmental stages of the system; and to synthesis: a speciftc type of structure can be obtained by systematically constructing a generating word that produces it. In fact the model here proposed is coherent with the fundamental assumptions of cellular biology and in particular with recent discoveries concerning DNA, which in the light of our model behaves like a very elaborate generating word.
Häftad, Franska, 2016
487 kr
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Häftad, Franska, 2016
351 kr
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Häftad, Franska, 2016
173 kr
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Häftad, Franska, 2018
351 kr
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Häftad, Franska, 2013
317 kr
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Häftad, Franska, 2020
206 kr
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Häftad, Franska, 2022
408 kr
Skickas inom 5-8 vardagar