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Gamboa, J. M. and Fernando Galván, José Francisco (2012) On The Irreducible Components Of A Semialgebraic Set. International Journal Of Mathematics, 23 (4). p. 40. ISSN 0129-167X
Official URL: http://www.worldscinet.com/ijm/ijm.shtml
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Abstract
In this work we define a semialgebraic set S Rn to be irreducible if the noetherian ring of Nash functions on S is an integral domain. Keeping this notion we develop a satisfactory theory of irreducible components of semialgebraic sets, and we use it fruitfully to approach four classical problems in Real Geometry for the ring : Substitution Theorem, Positivstellens¨atze, 17th Hilbert Problem and real Nullstellensatz, whose solution was known just in case S = M is an affine Nash manifold. In fact, we
give full characterizations of the families of semialgebraic sets for which these classical results are true.
Item Type: | Article |
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Uncontrolled Keywords: | Nash function; Nash set; irreducible semialgebraic set; irreducible components of a semialgebraic set; w-Nash set; q-Nash set; substitution theorem; positivstellens ¨atze; 17th Hilbert problem and real nullstellensatz |
Subjects: | Sciences > Mathematics > Algebraic geometry |
ID Code: | 15390 |
Deposited On: | 28 May 2012 09:02 |
Last Modified: | 02 Mar 2016 14:30 |
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