Dense Fewnomials
Korben Rusek, Jeanette Shakalli, and Frank Sottile.
Dense FewnomialsKorben Rusek, Jeanette Shakalli, and Frank Sottile. |
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| We derive new bounds of fewnomial type for the number of real solutions to systems of polynomials that have structure intermediate between fewnomials and generic (dense) polynomials. This uses a modified version of Gale duality for polynomial systems. We also use stratified Morse theory to bound the total Betti number of a hypersurface defined by such a dense fewnomial. These bounds contain and generalize previous bounds for ordinary fewnomials obtained by Bates, Bertrand, Bihan, and Sottile. |
