Computing Linear Matrix Representations of Helton-Vinnikov Curves
Computing Linear Matrix Representations of Helton-Vinnikov Curves
复制标题
计算 Helton-Vinnikov 曲线的线性矩阵表示
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
C. Vinzant
中科院分区:
文献类型:
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作者:
D. Plaumann;B. Sturmfels;C. Vinzant
Helton and Vinnikov showed that every rigidly convex curve in the real plane bounds a spectrahedron. This leads to the computational problem of explicitly producing a symmetric (positive definite) linear determinantal representation for a given curve. We study three approaches to this problem: an algebraic approach via solving polynomial equations, a geometric approach via contact curves, and an analytic approach via theta functions. These are explained, compared, and tested experimentally for low degree instances.