Pei Yuan Wu

Generating author description...

All published works

Action	Title	Year	Authors
+	Compressions and direct sums	2023	Hwa-Long Gau Pei Yuan Wu
+	Extremality of bounds for numerical radii of Foguel operators	2023	Hwa-Long Gau Chi-Kwong Li Kuo-Zhong Wang Pei Yuan Wu
+	Numerical Ranges of Operators and Matrices	2023	Pei Yuan Wu Hwa-Long Gau
+ PDF Chat	Which set is the numerical range of an operator?	2022	Pei Yuan Wu Hwa-Long Gau
+	Numerical ranges of Hankel matrices	2022	Hwa-Long Gau Pei Yuan Wu
+	Numerical range of the Foguel–Halmos operator	2021	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Numerical Ranges of Hilbert Space Operators	2021	Hwa-Long Gau Pei Yuan Wu
+	Algebraic and Essential Numerical Ranges	2021	Hwa-Long Gau Pei Yuan Wu
+	Numerical Ranges of Special Operators	2021	Hwa-Long Gau Pei Yuan Wu
+	Convex Set	2021	Hwa-Long Gau Pei Yuan Wu
+	Introduction: Preliminaries in Operator Theory	2021	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Generalized Numerical Ranges	2021	Hwa-Long Gau Pei Yuan Wu
+	Numerical ranges of Foguel operators	2020	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Products of two normal operators	2020	Man-Duen Choi Pei Yuan Wu
+	Equality of numerical ranges of matrix powers	2019	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+ PDF Chat	Constant norms and numerical radii of matrix powers	2019	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Equality of three numerical radius inequalities	2018	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Scalar approximants of quadratic operators with applications	2018	Amer Abu-Omar Pei Yuan Wu
+	Numerical ranges of products of two positive contractions	2017	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Lower bounds for the numerical radius	2017	Hwa-Long Gau Pei Yuan Wu
+	Operators with real parts at least	2016	Hwa-Long Gau Pei Yuan Wu
+	Numerical ranges of row stochastic matrices	2016	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Numerical radius of Hadamard product of matrices	2016	Hwa-Long Gau Pei Yuan Wu
+	Extremality of numerical radii of matrix products	2016	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Zero-dilation Index of S_n-matrix and Companion Matrix	2016	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Crawford numbers of companion matrices	2016	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Circular numerical ranges of partial isometries	2015	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Power partial isometry index and ascent of a finite matrix	2014	Hwa-Long Gau Pei Yuan Wu
+	Sums of orthogonal projections	2014	Man-Duen Choi Pei Yuan Wu
+	Upper and Lower Bounds for Numerical Radii of Block Shifts	2014	Hwa-Long Gau Pei Yuan Wu
+	Zero-dilation Indices of KMS Matrices	2014	Hwa-Long Gau Pei Yuan Wu
+	EXCURSIONS IN NUMERICAL RANGES	2014	Hwa-Long Gau Pei Yuan Wu
+	Power partial isometry index and ascent of a finite	2014	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Numerical ranges of KMS matrices	2013	Hwa-Long Gau Pei Yuan Wu
+	Structures and numerical ranges of power partial isometries	2013	Hwa-Long Gau Pei Yuan Wu
+	Zero-dilation index of a finite matrix	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Power Partial Isometry Index and Ascent of a Finite Matrix	2013	Hwa-Long Gau Pei Yuan Wu
+	Structures and Numerical Ranges of Power Partial Isometries	2013	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Numerical radii for tensor products of matrices	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Numerical Radii for Tensor Products of Operators	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Numerical Ranges of KMS Matrices	2013	Hwa-Long Gau Pei Yuan Wu
+	Zero-dilation Index of a Finite Matrix	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Numerical Ranges of KMS Matrices	2013	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Higher-rank numerical ranges and Kippenhahn polynomials	2013	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Numerical ranges and compressions of S_n-matrices	2013	Hwa-Long Gau Pei Yuan Wu
+	Power Partial Isometry Index and Ascent of a	2013	Finite Matrix Hwa-Long Gau Pei Yuan Wu
+	Numerical Ranges of KMS Matrices	2013	Hwa-Long Gau Pei Yuan Wu
+	Structures and Numerical Ranges of Power Partial Isometries	2013	Hwa-Long Gau Pei Yuan Wu
+	Zero-dilation Index of a Finite Matrix	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Power Partial Isometry Index and Ascent of a Finite Matrix	2013	Hwa-Long Gau Pei Yuan Wu
+	Numerical ranges and Geršgorin discs	2012	Chi-Tung Chang Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu
+	Diagonals and numerical ranges of weighted shift matrices	2012	Kuo-Zhong Wang Pei Yuan Wu
+	Noncircular elliptic discs as numerical ranges of nilpotent operators	2011	Hwa Long Gau Pei Yuan Wu
+	Numerical ranges as circular discs	2011	Pei Yuan Wu
+	Numerical ranges of weighted shifts	2011	Kuo-Zhong Wang Pei Yuan Wu
+	Numerical ranges of weighted shift matrices	2011	Ming Cheng Tsai Pei Yuan Wu
+	Higher-rank numerical ranges and dilations	2010	Hwa-Long Gau Chi-Kwong Li Pei Yuan Wu
+	Crawford numbers of powers of a matrix	2010	Kuo-Zhong Wang Pei Yuan Wu Hwa-Long Gau
+	Unitary part of a contraction	2010	Hwa-Long Gau Pei Yuan Wu
+	Defect indices of powers of a contraction	2010	Hwa-Long Gau Pei Yuan Wu
+	Numerical Ranges of Radial Toeplitz Operators on Bergman Space	2009	Kuo-Zhong Wang Pei Yuan Wu
+	Numerical radius inequality for C0 contractions	2009	Pei Yuan Wu Hwa-Long Gau Ming Cheng Tsai
+	Inner functions of numerical contractions	2008	Hwa-Long Gau Pei Yuan Wu
+	Numerical ranges of nilpotent operators	2008	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Numerical Radius Inequalities for Square-zero and Idempotent Operators	2008	Hwa-Long Gau Chin-Ying Huang Pei Yuan Wu
+	On the Reflexivity of $C_0(N)$ Contractions	2008	Pei Yuan Wu Yuan Pei
+	Linear and Multilinear Algebra	2008	Hwa-Long Gau Pei Yuan Wu
+	Line segments and elliptic arcs on the boundary of a numerical range	2007	Hwa-Long Gau Pei Yuan Wu
+	Fredholmness of Linear Combinations of Two Idempotents	2007	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Anderson’s theorem for compact operators	2006	Hwa-Long Gau Pei Yuan Wu
+	Numerical ranges of companion matrices	2006	Hwa-Long Gau Pei Yuan Wu
+	Polar Decompositions of C0(N) Contractions	2006	Pei Yuan Wu
+ PDF Chat	Finite-rank perturbations of positive operators and isometries	2006	Man-Duen Choi Pei Yuan Wu
+	Numerical range of a normal compression II	2004	Hwa-Long Gau Pei Yuan Wu
+	Numerical Range of a Normal Compression	2004	Hwa-Long Gau Pei Yuan Wu
+	Companion matrices: reducibility, numerical ranges and similarity to contractions	2004	Hwa-Long Gau Pei Yuan Wu
+	Numerical range circumscribed by two polygons	2004	Hwa-Long Gau Pei Yuan Wu
+	HIGHER-DIMENSIONAL NUMERICAL RANGES OF QUADRATIC OPERATORS	2003	Mao-Ting Chien Shu-Hsien Tso Pei Yuan Wu
+ PDF Chat	NUMERICAL RANGE AND PONCELET PROPERTY	2003	Hwa-Long Gau Pei Yuan Wu
+	Finite Blaschke products of contractions	2003	Hwa-Long Gau Pei Yuan Wu
+	Condition for the numerical range to contain an elliptic disc	2003	Hwa-Long Gau Pei Yuan Wu
+ PDF Chat	Direct sums of irreducible operators	2003	Jun Shen Fang Chunlan Jiang Pei Yuan Wu
+	Numerical range of Aluthge transform of operator	2002	Pei Yuan Wu
+	The numerical range of a nonnegative matrix	2002	Chi-Kwong Li Bit-Shun Tam Pei Yuan Wu
+	Polygons and Numerical Ranges	2000	Pei Yuan Wu
+	Polygons and Numerical Ranges	2000	Pei Yuan Wu
+	Dilation to Unilateral Shifts	2000	Pei Yuan Wu Katsutoshi Takahashi
+ PDF Chat	Matricial Ranges of Quadratic Operators	1999	Shu-Hsien Tso Pei Yuan Wu
+	Singular unitary dilations	1999	Pei Yuan Wu Katsutoshi Takahashi
+	Lucas' theorem refined<sup>∗</sup>	1999	Hwa-Long Gau Pei Yuan Wu
+	Dilation to inflations of s(φ)	1998	Hwa-Long Gau Pei Yuan Wu
+	Numerical range of<i>s</i>(φ)	1998	Hwa-Long Gau Pei Yuan Wu
+	Dilation to the unilateral shifts	1998	Katsutoshi Takahashi Pei Yuan Wu
+	SUMS OF STRONGLY IRREDUCIBLE OPERATORS	1998	Chunlan Jiang Pei Yuan Wu
+	Band-diagonal operators	1996	Che Kao Fong Pei Yuan Wu
+ PDF Chat	Sums and Products of Cyclic Operators	1994	Pei Yuan Wu
+	Difference and similarity models of two idempotent operators	1994	Jin-Hsien Wang Pei Yuan Wu
+ PDF Chat	Sums and products of cyclic operators	1994	Pei Yuan Wu
+ PDF Chat	Additive combinations of special operators	1994	Pei Yuan Wu
+	Which linear transformations have isomorphic hyperinvariant subspace lattices?	1992	Pei Yuan Wu
+	All (?) About Quasinormal Operators	1992	Pei Yuan Wu
+ PDF Chat	Products of unipotent matrices of index 2	1991	Jin-Hsien Wang Pei Yuan Wu
+ PDF Chat	Sums of square-zero operators	1991	Jin-Hsien Wang Pei Yuan Wu
+	Sums of idempotent matrices	1990	Pei Yuan Wu
+	Convex combinations of projections	1990	Man-Duen Choi Pei Yuan Wu
+	Sums of ldempotent Matrices	1990	Pei Yuan Wu Richard A. Brualdi
+	The operator factorization problems	1989	Pei Yuan Wu
+	Approximation by invertible and noninvertible operators	1989	Pei Yuan Wu
+ PDF Chat	Factorization of Matrices into Partial Isometries	1989	Kung-Hwang Kuo Pei Yuan Wu
+ PDF Chat	Factorization of matrices into partial isometries	1989	Kung Hwang Kuo Pei Yuan Wu
+	Products of positive semidefinite matrices	1988	Pei Yuan Wu
+	Products of Normal Operators	1988	Pei Yuan Wu
+	Products of nilpotent matrices	1987	Pei Yuan Wu
+ PDF Chat	Approximation by partial isometries	1986	Pei Yuan Wu
+ PDF Chat	Hyponormal Operators Quasisimilar to an Isometry	1985	Pei Yuan Wu
+ PDF Chat	Hyponormal operators quasisimilar to an isometry	1985	Pei Yuan Wu
+	Contractions with a unilateral shift summand are reflexive	1984	Pei Yuan Wu
+	Contractions with Constant Characteristic Function are Reflexive	1984	Pei Yuan Wu
+	Multiplicities of isometries	1984	Pei Yuan Wu
+ PDF Chat	The Structure of Quasinormal Operators and the Double Commutant Property	1982	John B. Conway Pei Yuan Wu
+ PDF Chat	The structure of quasinormal operators and the double commutant property	1982	John B. Conway Pei Yuan Wu
+ PDF Chat	On the quasi-similarity of hyponormal contractions	1981	Pei Yuan Wu
+ PDF Chat	𝐶₁₁ contractions are reflexive. II	1981	Pei Yuan Wu
+ PDF Chat	On the reflexivity of $C\sb{0}(N)$ contractions	1980	Pei Yuan Wu
+	Hyperinvariant Subspaces of C 11 Contractions	1979	Pei Yuan Wu
+	𝐶₁₁ contractions are reflexive	1979	Pei Yuan Wu
+ PDF Chat	Hyperinvariant subspaces of 𝐶₁₁ contractions	1979	Pei Yuan Wu
+	Conditions for completely nonunitary contractions to be spectral	1979	Pei Yuan Wu
+	The Hyperinvariant Subspace Lattice of a Contraction of Class C. 0	1978	Pei Yuan Wu
+ PDF Chat	Quasi-Similarity of Weak Contractions	1978	Pei Yuan Wu
+ PDF Chat	Quasi-similarity of weak contractions	1978	Pei Yuan Wu
+ PDF Chat	The hyperinvariant subspace lattice of a contraction of class 𝐶.₀	1978	Pei Yuan Wu
+ PDF Chat	On contractions satisfying 𝐴𝑙𝑔𝑇={𝑇}’	1977	Pei Yuan Wu

Common Coauthors

Coauthor	Papers Together
Hwa-Long Gau	61
Hwa Long Gau	11
Kuo-Zhong Wang	7
Kuo-Zhong Wang	6
Man-Duen Choi	4
Kuo Zhong Wang	4
Jin-Hsien Wang	3
Katsutoshi Takahashi	3
Chunlan Jiang	2
Shu-Hsien Tso	2
Chi-Kwong Li	2
Ming Cheng Tsai	2
John B. Conway	2
Bit-Shun Tam	1
Kung Hwang Kuo	1
Kuo-Zhong Wang	1
Amer Abu-Omar	1
Mao-Ting Chien	1
Chin-Ying Huang	1
Richard A. Brualdi	1
Finite Matrix	1
Jun Shen Fang	1
Yuan Pei	1
Chi Tung Chang	1
Che Kao Fong	1
Chi Kwong Li	1
Kung-Hwang Kuo	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+ PDF Chat	A Hilbert Space Problem Book	1982	Paul R. Halmos	62
+	Harmonic Analysis of Operators on Hilbert Space	1970	Béla Szõkefalvi-Nagy Ciprian Foiaş Hari Bercovici László Kérchy	34
+	Numerical range of<i>s</i>(φ)	1998	Hwa-Long Gau Pei Yuan Wu	20
+ PDF Chat	Matricial Ranges of Quadratic Operators	1999	Shu-Hsien Tso Pei Yuan Wu	19
+ PDF Chat	Generalized interpolation in 𝐻^{∞}	1967	Donald Sarason	16
+	Lucas' theorem refined<sup>∗</sup>	1999	Hwa-Long Gau Pei Yuan Wu	16
+ PDF Chat	The numerical radius of a nilpotent operator on a Hilbert space	1992	Uffe Haagerup Pierre de la Harpe	16
+	Operator Theory and Arithmetic in 𝐻^{∞}	1988	Hari Bercovici	15
+	On matrices whose numerical ranges have circular or weak circular symmetry	1999	Bit-Shun Tam Shangjun Yang	13
+	Condition for the numerical range to contain an elliptic disc	2003	Hwa-Long Gau Pei Yuan Wu	13
+	The numerical range of 3 × 3 matrices	1997	Dennis S. Keeler Leiba Rodman Ilya M. Spitkovsky	12
+	The numerical range of a nonnegative matrix	2002	Chi-Kwong Li Bit-Shun Tam Pei Yuan Wu	12
+	Numerical ranges and Poncelet curves	1998	Boris Mirman	12
+ PDF Chat	Two-dimensional representations of uniform algebras	1995	Takahiko Nakazi Katsutoshi Takahashi	10
+ PDF Chat	A Course in Functional Analysis.	1986	T. W. Gamelin John B. Conway	10
+ PDF Chat	Perron–Frobenius type results on the numerical range	2002	John Maroulas Panayiotis Psarrakos Michael J. Tsatsomeros	10
+	Companion matrices: reducibility, numerical ranges and similarity to contractions	2004	Hwa-Long Gau Pei Yuan Wu	10
+	Generalized Interpolation in H ∞	1967	Donald Sarason	10
+	A numerical range characterization of jordan blocks	1998	Pei Yuanwu	10
+	On the numerical range of a matrix	2007	Paul F. Zachlin Michiel E. Hochstenbach	9
+	Dilation to inflations of s(φ)	1998	Hwa-Long Gau Pei Yuan Wu	9
+ PDF Chat	The numerical range of an operator	1970	Mary R. Embry	9
+	Canonical forms, higher rank numerical ranges, totally isotropic subspaces, and matrix equations	2008	Chi-Kwong Li Nung-Sing Sze	8
+	UB-matrices and conditions for Poncelet polygon to be closed	2002	Boris Mirman	8
+	On the Numerical Radius of a Linear Operator	1967	J. P. Williams Thomas R. Crimmins	8
+ PDF Chat	Products of self-adjoint operators.	1969	Heydar Radjavi J. P. Williams	7
+ PDF Chat	Invariant subspaces and unstarred operator algebras	1966	Donald Sarason	7
+	Numerical ranges of nilpotent operators	2008	Hwa-Long Gau Pei Yuan Wu	7
+	Complex Algebraic Curves	1992	Frances Kirwan	7
+ PDF Chat	A Course in Functional Analysis	1985	John B. Conway	7
+	Numerical ranges, Poncelet curves, invariant measures	2001	Boris Mirman V. A. Borovikov Lev Ladyzhensky Robert E. Vinograd	7
+	Numerical ranges as circular discs	2011	Pei Yuan Wu	7
+	Approximation of Hilbert space operators	1984	Domingo A. Herrero	6
+ PDF Chat	Every isometry is reflexive	1971	James A. Deddens	6
+	Numerical radius inequality for C0 contractions	2009	Pei Yuan Wu Hwa-Long Gau Ming Cheng Tsai	6
+	Model theory and linear extreme points in the numerical radius unit ball	1997	Michael A. Dritschel Hugo J. Woerdeman	6
+	Higher-rank numerical ranges and compression problems	2006	Man-Duen Choi David W. Kribs Karol Życzkowski	6
+ PDF Chat	Numerical radii for tensor products of matrices	2013	Hwa-Long Gau Kuo-Zhong Wang Pei Yuan Wu	6
+ PDF Chat	Trace class perturbations of isometries and unitary dilations	1974	Richard Carey	5
+ PDF Chat	Das algebraische Analogon zu einem Satze von Fej�r	1918	Otto Toeplitz	5
+	When is a matrix a difference of two idempotents	1990	Robert E. Hartwig Mohan S. Putcha	5
+	Numerical ranges of companion matrices	2006	Hwa-Long Gau Pei Yuan Wu	5
+ PDF Chat	NUMERICAL RANGE AND PONCELET PROPERTY	2003	Hwa-Long Gau Pei Yuan Wu	5
+	Polygons and Numerical Ranges	2000	Pei Yuan Wu	5
+	On sums of projections	1969	Peter Fillmore	5
+	On the essential numerical range, the essential spectrum, and a problem of Halmos	1972	Peter Fillmore Joseph G. Stampfli J. P. Williams	5
+	Numerical ranges of reducible companion matrices	2009	Hwa-Long Gau	5
+ PDF Chat	The numerical radius of a commuting product.	1988	Veronika Müller	5
+	Numerical Range of a Normal Compression	2004	Hwa-Long Gau Pei Yuan Wu	5
+	Line segments and elliptic arcs on the boundary of a numerical range	2007	Hwa-Long Gau Pei Yuan Wu	5