5 papers
Schur--Plucker Geometry of the MDS Locus for Principal-Ideal Codes
Yangcheng Li, Pingzhi Yuan
Let \(g\) be a monic polynomial of degree \(r<n\), and let \(C_g(n)\) be the coefficient-vector code formed by multiples \(ug\) with \(°(ug)<n\). We study the coefficient-space MDS…
Cyclic Projective Orbits on Rational Normal Curves and MDS Codes
Yangcheng Li, Pingzhi Yuan
Let \(A\) be a cyclic operator on an \(r\)-dimensional vector space over a field \(k\), and let \(z\) be a cyclic vector. Their Krylov code has parity-check matrix \((z,Az,\ldots,A…
Cyclic Codes and Cyclically Covering Subspaces over Finite Fields
Yangcheng Li, Pingzhi Yuan
Let \(q\) be a power of a prime \(p\), and let \(n\) be a positive integer. A subspace \(U\subseteq \mathbb F_q^n\) is called cyclically covering if the union of all its cyclic shi…
On cyclically covering subspaces of
Yangcheng Li, Pingzhi Yuan, Shuang Li +1
For a prime power \( q \) and a positive integer \( n \), a subspace \( U \subseteq \mathbb{F}_q^n \) is called cyclically covering if the union of all its cyclic shifts covers the…
On Trivial Cyclically Covering Subspaces of in Non-Coprime Characteristic
Shuang Li, Pingzhi Yuan
A subspace of is called \textit{cyclically covering} if the whole space is the union of the cyclic shifts of . The case it…