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Author ID: duncan.john Recent zbMATH articles by "Duncan, John"
Published as: Duncan, J.; Duncan, John
External Links: MGP
Documents Indexed: 46 Publications since 1966, including 3 Books
Co-Authors: 25 Co-Authors with 39 Joint Publications
534 Co-Co-Authors

Publications by Year

Citations contained in zbMATH Open

35 Publications have been cited 1,420 times in 1,187 Documents Cited by Year
Complete normed algebras. Zbl 0271.46039
Bonsall, F. F.; Duncan, J.
524
1973
Numerical ranges of operators on normed spaces and of elements of normed algebras. Zbl 0207.44802
Bonsall, F. F.; Duncan, J.
312
1971
Numerical ranges II. Zbl 0262.47001
Bonsall, F. F.; Duncan, J.
204
1973
Amenability of inverse semigroups and their semigroup algebras. Zbl 0393.22004
Duncan, J.; Namioka, I.
71
1978
The second dual of a Banach algebra. Zbl 0427.46028
Duncan, J.; Hosseiniun, S. A. R.
62
1979
Amenability for discrete convolution semigroup algebras. Zbl 0748.46027
Duncan, J.; Paterson, A. L. T.
53
1990
The numerical index of a normed space. Zbl 0197.10402
Duncan, J.; McGregor, C. M.; Pryce, J. D.; White, A. J.
41
1970
Duals of Banach spaces of entire functions. Zbl 0769.46011
Anderson, J. M.; Duncan, J.
16
1990
\(C^*\)-algebra of inverse semigroups. Zbl 0551.46045
Duncan, J.; Paterson, A. L. T.
15
1985
Characterizations of commutativity for \(C^*\)-algebras. Zbl 0301.46047
Crabb, M. J.; Duncan, J.; McGregor, C. M.
13
1974
Numerical ranges. Zbl 0461.47001
Bonsall, F. F.; Duncan, J.
13
1980
First order cohomology of Banach semigroup algebras. Zbl 0910.46055
Bowling, S.; Duncan, J.
12
1998
Norm inequalities for \(C^*\)-algebras. Zbl 0331.46050
Duncan, J.; Taylor, P. J.
11
1976
The Banach algebra \(\ell^1(S)\). Zbl 0299.46047
Barnes, B. A.; Duncan, J.
10
1975
Some extremal problems in the theory of numerical ranges. Zbl 0229.46049
Crabb, M. J.; Duncan, J.; McGregor, C. M.
9
1972
Almost periodic functionals on Banach algebras. Zbl 0782.43008
Duncan, J.; Ülger, A.
7
1992
Nonlinear conditions for differentiability of functions. Zbl 0632.58008
Duncan, John; Krantz, Steven G.; Parks, Harold R.
7
1985
Second-order cohomology groups of some semigroup algebras. Zbl 0938.46046
Dales, H. Garth; Duncan, John
6
1998
Carleman’s inequality. Zbl 1187.26011
Duncan, John; McGregor, Colin M.
6
2003
Dually irreducible representations of Banach algebras. Zbl 0153.44603
Bonsall, F. F.; Duncan, J.
5
1968
Finite dimensionality, nilpotents and quasinilpotents in Banach algebras. Zbl 0275.46038
Duncan, J.; Tullo, A. W.
4
1974
Monogenic inverse semigroups and their \(C^*\)-algebras. Zbl 0557.47027
Conway, J. B.; Duncan, J.; Paterson, A. L. T.
3
1984
Primitive idempotent measures on compact semigroups. Zbl 0201.02802
Duncan, J.
3
1970
Hermitian powers: A Müntz theorem and extremal algebras. Zbl 0999.46021
Crabb, M. J.; Duncan, J.; McGregor, C. M.; Ransford, T. J.
2
2001
Hermitians in matrix algebras with operator norm. Zbl 1465.15014
Crabb, Michael J.; Duncan, John; McGregor, Colin M.
1
2021
On one-sided primitivity of Banach algebras. Zbl 1195.46047
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2010
Finiteness and recognizability problems for substitution maps on two symbols. Zbl 1202.37014
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2010
Mapping theorems and the numerical radius. Zbl 0241.46046
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
1972
\(C^*\)-algebras of Clifford semigroups. Zbl 0681.46052
Duncan, John; Paterson, A. L. T.
1
1989
Some inequalities for norm unitaries in Banach algebras. Zbl 0377.46039
Crabb, M. J.; Duncan, J.
1
1978
Spectra in some inverse semigroup algebras. Zbl 1098.46039
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2004
Dual representations of Banach algebras. Zbl 0148.37602
Bonsall, F. F.; Duncan, J.
1
1967
On compact normal semigroups. Zbl 0205.02603
Choy, S. T. L.; Dummigan, B.; Duncan, J.
1
1969
Rectangular parallelepipeds in ellipsoids. Zbl 0865.51015
Duncan, J.; Khavinson, D.; Shapiro, H.
1
1996
Some factorable nil rings of characteristic two. Zbl 0408.16006
Duncan, J.; MacDonald, I. D.
1
1979
Hermitians in matrix algebras with operator norm. Zbl 1465.15014
Crabb, Michael J.; Duncan, John; McGregor, Colin M.
1
2021
On one-sided primitivity of Banach algebras. Zbl 1195.46047
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2010
Finiteness and recognizability problems for substitution maps on two symbols. Zbl 1202.37014
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2010
Spectra in some inverse semigroup algebras. Zbl 1098.46039
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
2004
Carleman’s inequality. Zbl 1187.26011
Duncan, John; McGregor, Colin M.
6
2003
Hermitian powers: A Müntz theorem and extremal algebras. Zbl 0999.46021
Crabb, M. J.; Duncan, J.; McGregor, C. M.; Ransford, T. J.
2
2001
First order cohomology of Banach semigroup algebras. Zbl 0910.46055
Bowling, S.; Duncan, J.
12
1998
Second-order cohomology groups of some semigroup algebras. Zbl 0938.46046
Dales, H. Garth; Duncan, John
6
1998
Rectangular parallelepipeds in ellipsoids. Zbl 0865.51015
Duncan, J.; Khavinson, D.; Shapiro, H.
1
1996
Almost periodic functionals on Banach algebras. Zbl 0782.43008
Duncan, J.; Ülger, A.
7
1992
Amenability for discrete convolution semigroup algebras. Zbl 0748.46027
Duncan, J.; Paterson, A. L. T.
53
1990
Duals of Banach spaces of entire functions. Zbl 0769.46011
Anderson, J. M.; Duncan, J.
16
1990
\(C^*\)-algebras of Clifford semigroups. Zbl 0681.46052
Duncan, John; Paterson, A. L. T.
1
1989
\(C^*\)-algebra of inverse semigroups. Zbl 0551.46045
Duncan, J.; Paterson, A. L. T.
15
1985
Nonlinear conditions for differentiability of functions. Zbl 0632.58008
Duncan, John; Krantz, Steven G.; Parks, Harold R.
7
1985
Monogenic inverse semigroups and their \(C^*\)-algebras. Zbl 0557.47027
Conway, J. B.; Duncan, J.; Paterson, A. L. T.
3
1984
Numerical ranges. Zbl 0461.47001
Bonsall, F. F.; Duncan, J.
13
1980
The second dual of a Banach algebra. Zbl 0427.46028
Duncan, J.; Hosseiniun, S. A. R.
62
1979
Some factorable nil rings of characteristic two. Zbl 0408.16006
Duncan, J.; MacDonald, I. D.
1
1979
Amenability of inverse semigroups and their semigroup algebras. Zbl 0393.22004
Duncan, J.; Namioka, I.
71
1978
Some inequalities for norm unitaries in Banach algebras. Zbl 0377.46039
Crabb, M. J.; Duncan, J.
1
1978
Norm inequalities for \(C^*\)-algebras. Zbl 0331.46050
Duncan, J.; Taylor, P. J.
11
1976
The Banach algebra \(\ell^1(S)\). Zbl 0299.46047
Barnes, B. A.; Duncan, J.
10
1975
Characterizations of commutativity for \(C^*\)-algebras. Zbl 0301.46047
Crabb, M. J.; Duncan, J.; McGregor, C. M.
13
1974
Finite dimensionality, nilpotents and quasinilpotents in Banach algebras. Zbl 0275.46038
Duncan, J.; Tullo, A. W.
4
1974
Complete normed algebras. Zbl 0271.46039
Bonsall, F. F.; Duncan, J.
524
1973
Numerical ranges II. Zbl 0262.47001
Bonsall, F. F.; Duncan, J.
204
1973
Some extremal problems in the theory of numerical ranges. Zbl 0229.46049
Crabb, M. J.; Duncan, J.; McGregor, C. M.
9
1972
Mapping theorems and the numerical radius. Zbl 0241.46046
Crabb, M. J.; Duncan, J.; McGregor, C. M.
1
1972
Numerical ranges of operators on normed spaces and of elements of normed algebras. Zbl 0207.44802
Bonsall, F. F.; Duncan, J.
312
1971
The numerical index of a normed space. Zbl 0197.10402
Duncan, J.; McGregor, C. M.; Pryce, J. D.; White, A. J.
41
1970
Primitive idempotent measures on compact semigroups. Zbl 0201.02802
Duncan, J.
3
1970
On compact normal semigroups. Zbl 0205.02603
Choy, S. T. L.; Dummigan, B.; Duncan, J.
1
1969
Dually irreducible representations of Banach algebras. Zbl 0153.44603
Bonsall, F. F.; Duncan, J.
5
1968
Dual representations of Banach algebras. Zbl 0148.37602
Bonsall, F. F.; Duncan, J.
1
1967
all top 5

Cited by 1,069 Authors

31 Martín Suarez, Miguel
31 Rodríguez Palacios, Angel
20 Merí, Javier
18 Acosta Vigil, María Dolores
17 Lau, Anthony To-Ming
14 Saito, Kichisuke
13 Amini, Massoud
13 Duncan, John
12 Bhatt, Subhash J.
12 Crabb, Michael J.
11 Bodaghi, Abasalt
11 Kim, Sun Kwang
11 Payá, Rafael
10 Edwards, Christopher Martin
10 McGregor, Colin M.
9 El Kinani, Abdellah
9 García, Domingo
9 Ghahramani, Fereidoun
9 Maestre, Manuel
9 Raubenheimer, Heinrich
9 Štěrbová, Dina
9 Wolf, Elke
8 Becerra Guerrero, Julio
8 Kaup, Wilhelm Gerhard
8 Kim, Sung Guen
8 Lee, Han Ju
8 Peralta, Antonio M.
7 Kadets’, Volodymyr Mykhaĭlovych
7 Müller, Vladimír
7 Park, Choonkil
7 Pourabbas, Abdolrasoul
7 Sahami, Amir
7 Spain, Philip G.
7 Tanaka, Ryotaro
7 Villena, Armando R.
7 Willis, George A.
7 Zhang, Yong
6 Abtahi, Fatemeh
6 Aiena, Pietro
6 Boasso, Enrico
6 Brešar, Matej
6 Chō, Muneo
6 Hamada, Hidetaka
6 Jamison, James Edward
6 Kaidi, El Amin Mokhtar
6 Kohr, Gabriela
6 Medghalchi, Ali Reza
6 Rejali, Ali
6 Scheffold, Egon
6 Smith, Roger R.
6 Soleimani-Mourchehkhorti, Maryam
6 Sourour, Ahmed Ramzi
6 Ulger, Ali
5 Aksoy, Asuman Güven
5 Aupetit, Bernard H.
5 Benslimane, Mohamed
5 Blecher, David P.
5 Boulabiar, Karim Mohamed
5 Choy, Stephen T. L.
5 Duggal, Bhagwati Prashad
5 Esslamzadeh, Gholam Hossein
5 Filali, Mahmoud
5 Gourdeau, Frédéric
5 Graham, Ian R.
5 Hatori, Osamu
5 Iochum, Bruno
5 Kaniuth, Eberhard
5 Komuro, Naoto
5 Kulkarni, Sudhir Hanmantrao
5 Li, Chi-Kwong
5 Loy, Richard J.
5 Mabrouk, Mohamed
5 Mitani, Ken-Ichi
5 Nemati, Mehdi
5 Pasteczka, Paweł
5 Poguntke, Detlev
5 Pourmahmood-Aghababa, Hasan
5 Pym, John S.
5 Rüttimann, Gottfried Traugott
5 Samei, Ebrahim
5 Soroushmehr, Maedeh
5 Yood, Bertram
5 Zivari-Kazempour, Abbas
4 Alaminos, Jerónimo
4 Barnes, Bruce A.
4 Barraa, Mohamed
4 Brits, Rudi M.
4 Chang, Ick-Soon
4 Choi, Yun Sung
4 Chu, Choho
4 Deutsch, Emeric
4 Ebrahimi Bagha, Davood
4 Grobler, Jacobus J.
4 Grønbæk, Niels
4 Herzog, Gerd
4 Jabbari, Ali
4 Kato, Mikio
4 Khan, Abdul Nadim
4 Langemets, Johann
4 Lewicki, Grzegorz
...and 969 more Authors
all top 5

Cited in 203 Serials

102 Journal of Mathematical Analysis and Applications
88 Journal of Functional Analysis
83 Proceedings of the American Mathematical Society
71 Linear Algebra and its Applications
40 Semigroup Forum
25 Archiv der Mathematik
24 Rendiconti del Circolo Matemàtico di Palermo. Serie II
23 Mathematische Annalen
23 Transactions of the American Mathematical Society
22 Glasgow Mathematical Journal
22 Journal of Algebra
22 Proceedings of the Edinburgh Mathematical Society. Series II
21 Mathematische Zeitschrift
18 Manuscripta Mathematica
18 Positivity
17 Mathematical Proceedings of the Cambridge Philosophical Society
17 Rocky Mountain Journal of Mathematics
16 Israel Journal of Mathematics
15 Quaestiones Mathematicae
15 Mediterranean Journal of Mathematics
14 Linear and Multilinear Algebra
14 Advances in Mathematics
14 Mathematische Nachrichten
12 Acta Mathematica Sinica. English Series
11 Bulletin of the Australian Mathematical Society
10 Communications in Algebra
10 Abstract and Applied Analysis
9 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
9 Czechoslovak Mathematical Journal
9 Integral Equations and Operator Theory
9 Monatshefte für Mathematik
9 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics
9 Journal of Mathematical Sciences (New York)
8 Periodica Mathematica Hungarica
8 Studia Mathematica
8 Acta Mathematica Hungarica
8 Banach Journal of Mathematical Analysis
7 Annales Scientifiques de l’Université Blaise Pascal Clermont-Ferrand II. Mathématiques
7 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM
6 Aequationes Mathematicae
6 Proceedings of the Indian Academy of Sciences. Mathematical Sciences
6 Expositiones Mathematicae
6 Filomat
6 Journal of Mathematical Extension
6 Journal of Linear and Topological Algebra
5 Annales de l’Institut Fourier
5 Functional Analysis and its Applications
5 International Journal of Mathematics and Mathematical Sciences
5 Indagationes Mathematicae. New Series
5 Journal of the Australian Mathematical Society
5 Asian-European Journal of Mathematics
5 Sahand Communications in Mathematical Analysis
4 Arkiv för Matematik
4 Illinois Journal of Mathematics
4 Mathematica Slovaca
4 Numerical Functional Analysis and Optimization
4 Results in Mathematics
4 Journal of Inequalities and Applications
4 Communications of the Korean Mathematical Society
4 Nihonkai Mathematical Journal
4 Annals of Functional Analysis
4 Advances in Operator Theory
3 Lithuanian Mathematical Journal
3 Mathematical Notes
3 Applied Mathematics and Computation
3 Canadian Mathematical Bulletin
3 Journal of Approximation Theory
3 Journal of the Mathematical Society of Japan
3 Numerische Mathematik
3 Ergodic Theory and Dynamical Systems
3 Bulletin of the Iranian Mathematical Society
3 Mathematical Inequalities & Applications
3 Cubo
3 Bulletin of the American Mathematical Society
3 Operators and Matrices
3 Science China. Mathematics
3 Journal of Function Spaces
2 Indian Journal of Pure & Applied Mathematics
2 Journal d’Analyse Mathématique
2 Reports on Mathematical Physics
2 Algebra Universalis
2 Collectanea Mathematica
2 Journal of Computational and Applied Mathematics
2 Journal of Soviet Mathematics
2 Kodai Mathematical Journal
2 Mathematika
2 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
2 Publications of the Research Institute for Mathematical Sciences, Kyoto University
2 Zeitschrift für Analysis und ihre Anwendungen
2 Forum Mathematicum
2 The Journal of Geometric Analysis
2 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences
2 Acta Mathematica Sinica. New Series
2 The Journal of Analysis
2 Turkish Journal of Mathematics
2 The Journal of Fourier Analysis and Applications
2 Honam Mathematical Journal
2 Revista Matemática Complutense
2 Kragujevac Journal of Mathematics
2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
...and 103 more Serials
all top 5

Cited in 53 Fields

809 Functional analysis (46-XX)
472 Operator theory (47-XX)
204 Abstract harmonic analysis (43-XX)
72 Linear and multilinear algebra; matrix theory (15-XX)
72 Nonassociative rings and algebras (17-XX)
67 Topological groups, Lie groups (22-XX)
50 Associative rings and algebras (16-XX)
47 Group theory and generalizations (20-XX)
28 Several complex variables and analytic spaces (32-XX)
21 Real functions (26-XX)
21 Difference and functional equations (39-XX)
20 Functions of a complex variable (30-XX)
17 Global analysis, analysis on manifolds (58-XX)
15 Approximations and expansions (41-XX)
14 General topology (54-XX)
13 Numerical analysis (65-XX)
12 Order, lattices, ordered algebraic structures (06-XX)
12 Harmonic analysis on Euclidean spaces (42-XX)
11 Dynamical systems and ergodic theory (37-XX)
8 Ordinary differential equations (34-XX)
8 Convex and discrete geometry (52-XX)
7 Quantum theory (81-XX)
6 Probability theory and stochastic processes (60-XX)
6 Computer science (68-XX)
5 Potential theory (31-XX)
4 Combinatorics (05-XX)
4 Commutative algebra (13-XX)
4 Partial differential equations (35-XX)
4 Integral equations (45-XX)
4 Systems theory; control (93-XX)
3 Integral transforms, operational calculus (44-XX)
3 Geometry (51-XX)
3 Manifolds and cell complexes (57-XX)
2 General and overarching topics; collections (00-XX)
2 Mathematical logic and foundations (03-XX)
2 Number theory (11-XX)
2 \(K\)-theory (19-XX)
2 Calculus of variations and optimal control; optimization (49-XX)
2 Differential geometry (53-XX)
2 Algebraic topology (55-XX)
2 Statistics (62-XX)
1 General algebraic systems (08-XX)
1 Field theory and polynomials (12-XX)
1 Algebraic geometry (14-XX)
1 Category theory; homological algebra (18-XX)
1 Measure and integration (28-XX)
1 Special functions (33-XX)
1 Sequences, series, summability (40-XX)
1 Fluid mechanics (76-XX)
1 Relativity and gravitational theory (83-XX)
1 Operations research, mathematical programming (90-XX)
1 Biology and other natural sciences (92-XX)
1 Information and communication theory, circuits (94-XX)

Citations by Year