Numerical range of S (φ) HL Gau, P Yuan Wu Linear and Multilinear Algebra 45 (1), 49-73, 1998 | 88 | 1998 |

Numerical range and Poncelet property HL Gau, PY Wu Taiwanese Journal of Mathematics 7 (2), 173-193, 2003 | 69 | 2003 |

Numerical ranges of Hilbert space operators HL Gau, PY Wu Cambridge University Press, 2021 | 56 | 2021 |

Biseparating linear maps between continuous vector-valued function spaces HL Gau, JS Jeang, NC Wong Journal of the Australian Mathematical Society 74 (1), 101-110, 2003 | 45 | 2003 |

Companion matrices: reducibility, numerical ranges and similarity to contractions HL Gau, PY Wu Linear algebra and its applications 383, 127-142, 2004 | 44 | 2004 |

Condition for the numerical range to contain an elliptic disc HL Gau, PY Wu Linear algebra and its applications 364, 213-222, 2003 | 44 | 2003 |

Lucas' theorem refined HL Gau, PY Wu Linear and Multilinear Algebra 45 (4), 359-373, 1999 | 42 | 1999 |

Higher rank numerical ranges of normal matrices HL Gau, CK Li, YT Poon, NS Sze SIAM journal on matrix analysis and applications 32 (1), 23-43, 2011 | 32 | 2011 |

𝐶*-isomorphisms, Jordan isomorphisms, and numerical range preserving maps HL Gau, CK Li Proceedings of the American Mathematical Society 135 (9), 2907-2914, 2007 | 29 | 2007 |

Higher-rank numerical ranges and dilations HL Gau, CK Li, PY Wu Journal of Operator Theory, 181-189, 2010 | 28 | 2010 |

ELLIPTIC NUMERICAL RANGES OF MATRICES HL Gau Taiwanese Journal of Mathematics 10 (1), 117-128, 2006 | 28 | 2006 |

Numerical range circumscribed by two polygons HL Gau, PY Wu Linear algebra and its applications 382, 155-170, 2004 | 27 | 2004 |

Invertibility and Fredholmness of linear combinations of quadratic, k-potent and nilpotent operators HL Gau, CJ Wang, NC Wong Operators and Matrices 2 (2), 193-199, 2008 | 24 | 2008 |

Weighted shift matrices: Unitary equivalence, reducibility and numerical ranges HL Gau, MC Tsai, HC Wang Linear Algebra and its Applications 438 (1), 498-513, 2013 | 23 | 2013 |

Numerical range of a normal compression HL Gau, PY Wu Linear and Multilinear Algebra 52 (3-4), 195-201, 2004 | 20 | 2004 |

Dilation to inflations of S (φ) HL Gau, P Yuan Wu Linear and Multilinear Algebra 45 (2-3), 109-123, 1998 | 20 | 1998 |

Numerical ranges and compressions of Sn-matrices HL Gau, PY Wu Operators and Matrices 7 (2), 465-476, 2013 | 19 | 2013 |

Line segments and elliptic arcs on the boundary of a numerical range HL Gau, PY Wu Linear and Multilinear Algebra 56 (1-2), 131-142, 2008 | 18 | 2008 |

Numerical ranges of companion matrices HL Gau, PY Wu Linear algebra and its applications 421 (2-3), 202-218, 2007 | 17 | 2007 |

Numerical radii for tensor products of matrices HL Gau, KZ Wang, PY Wu Linear and Multilinear Algebra 63 (10), 1916-1936, 2015 | 16 | 2015 |