Polynomial images of R

نویسندگان

  • José F. Fernando
  • J. M. Gamboa
چکیده

Let R be a real closed field and n ≥ 2. We prove that: (1) for every finite subset F of R, the semialgebraic set R \ F is a polynomial image of R; and (2) for any independent linear forms l1, . . . , lr of R , the semialgebraic set {l1 > 0, . . . , lr > 0} ⊂ R is a polynomial image of R.

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تاریخ انتشار 2002