【115/10/15】16:20-17:10 俞韋亘 教授 (國立中央大學數學系)
發佈日期 :
2026-10-12
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| Time | 2026-10-15 16:20-17:10 |
| Venue | 數學館1樓 31106 教室 |
| Speaker | 俞韋亘 教授 (國立中央大學數學系) |
| Title | Semidefinite Programming Bounds for Designs on Spheres and Hamming Spaces |
| Abstract | We use semidefinite programming(SDP) methods for spherical codes and energy minimization to improve lower bounds for designs on spheres and Hamming spaces in low-dimensional cases. In particular, we use the SDP to improve the bounds for Hamming designs (or orthogonal arrays, equivalently) and the harmonic index 4-designs on spheres. |
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