Edit Profile (opens in new tab) Radjavi, Heydar Compute Distance To: Compute Author ID: radjavi.heydar Published as: Radjavi, Heydar; Radjavi, H.; Radjavi, Haydar Homepage: https://uwaterloo.ca/pure-mathematics/people-profiles/heydar-radjavi External Links: MGP · dblp · GND Member of Collectives: Honor, R. B.; Semitransitivity Working Group at LAW’05 Documents Indexed: 220 Publications since 1962, including 3 Books 2 Further Contributions Biographic References: 2 Publications Co-Authors: 68 Co-Authors with 194 Joint Publications 1,238 Co-Co-Authors all top 5 Co-Authors 28 single-authored 61 Rosenthal, Peter 31 Omladič, Matjaž 27 MacDonald, Gordon Wilson 27 Nordgren, Eric A. 24 Marcoux, Laurent W. 22 Livshits, Leo 18 Radjabalipour, Mehdi 15 Mastnak, Mitja 13 Bernik, Janez 11 Drnovšek, Roman 10 Hadwin, Donald W. 10 Košir, Tomaž 9 Grunenfelder, Luzius 9 Mathes, Ben 9 Popov, Alexey I. 8 Laurie, Cecelia 7 Šemrl, Peter 7 Sourour, Ahmed Ramzi 7 Yahaghi, Bamdad R. 6 Choi, Man-Duen 6 Fong, Che-Kao 6 Jafarian, Ali A. 5 Behzad, Mehdi 5 Troitsky, Vladimir G. 4 Fillmore, Peter A. 4 Kokol-Bukovšek, Damjana 4 Longstaff, William Ellison 3 Davidson, Kenneth R. 3 Laffey, Thomas J. 3 Tan, Kok-Keong 3 Zhang, Yuanhang 2 Hladnik, Milan 2 Hou, Jinchuan 2 Levene, Rupert Howard 2 Okniński, Jan 2 Tam, Pingkwan 1 Aghamollaei, Gholamreza 1 Akbari, Saieed 1 Cigler, Grega 1 Cramer, Zachary 1 Davis, Chandler 1 Edelstein, Michael 1 Gessesse, Hailegebriel E. 1 Guralnick, Robert Michael 1 Gustafson, William H. 1 Halmos, Paul Richard 1 Harrison, Kenneth John 1 Holbrook, John A. R. 1 Jaffarian, Ali 1 Katavolos, Aristides 1 Kennedy, Matthew 1 Khalkhali, Masoud 1 Kramar Fijavž, Marjeta 1 Kuzma, Bojan 1 Lambrou, Michael S. 1 Lomonosov, Victor I. 1 Lu, James J. 1 Lumer, Gunter 1 Meshulam, Roy 1 Mohebi, Hossein 1 Müller, Vladimír 1 Murphy, Gerard J. 1 Murray, Neil V. 1 Paré, Robert 1 Rosenthal, Erik J. 1 Sastri, Chelluri C. A. 1 Semitransitivity Working Group at LAW’05 1 Shul’man, Viktor Semënovich 1 Šivic, Klemen 1 Spinu, Eugeniu 1 Tcaciuc, Adi 1 The Hadwin Lunch Bunch 1 Timoney, Richard Martin 1 Williams, James P. 1 Williamson, Peter all top 5 Serials 29 Linear Algebra and its Applications 17 Proceedings of the American Mathematical Society 16 Linear and Multilinear Algebra 14 Semigroup Forum 12 Studia Mathematica 11 Indiana University Mathematics Journal 11 Journal of Functional Analysis 8 Canadian Journal of Mathematics 8 Journal of Operator Theory 6 Acta Scientiarum Mathematicarum 6 Integral Equations and Operator Theory 6 Journal of the London Mathematical Society. Second Series 6 Mathematische Annalen 6 Positivity 4 Transactions of the American Mathematical Society 4 Operators and Matrices 3 Journal of Mathematical Analysis and Applications 3 Journal of Pure and Applied Algebra 3 Michigan Mathematical Journal 3 Pacific Journal of Mathematics 2 Communications in Algebra 2 Israel Journal of Mathematics 2 American Journal of Mathematics 2 Journal of Algebra 2 ELA. The Electronic Journal of Linear Algebra 1 Houston Journal of Mathematics 1 Obzornik za Matematiko in Fiziko 1 Revue Roumaine de Mathématiques Pures et Appliquées 1 The Mathematical Intelligencer 1 Acta Mathematica Sinica 1 Archiv der Mathematik 1 Bulletin of the London Mathematical Society 1 Duke Mathematical Journal 1 Geometriae Dedicata 1 Illinois Journal of Mathematics 1 Journal of Combinatorial Theory. Series B 1 Journal für die Reine und Angewandte Mathematik 1 Publicationes Mathematicae 1 Statistics & Probability Letters 1 Journal of Natural Geometry 1 Proceedings of the Royal Irish Academy. Section A, Mathematical and Physical Sciences 1 Expositiones Mathematicae 1 Taiwanese Journal of Mathematics 1 Acta Mathematica Sinica. English Series 1 Journal of Algebra and its Applications 1 Bulletin of the American Mathematical Society 1 Journal of the London Mathematical Society 1 Journal of Mathematics and Mechanics 1 Ergebnisse der Mathematik und ihrer Grenzgebiete 1 Ars Mathematica Contemporanea 1 Universitext all top 5 Fields 149 Operator theory (47-XX) 94 Linear and multilinear algebra; matrix theory (15-XX) 36 Group theory and generalizations (20-XX) 22 Functional analysis (46-XX) 9 Associative rings and algebras (16-XX) 6 Nonassociative rings and algebras (17-XX) 5 Topological groups, Lie groups (22-XX) 3 Combinatorics (05-XX) 2 History and biography (01-XX) 2 \(K\)-theory (19-XX) 2 Geometry (51-XX) 2 General topology (54-XX) 1 Mathematical logic and foundations (03-XX) 1 Difference and functional equations (39-XX) 1 Approximations and expansions (41-XX) 1 Abstract harmonic analysis (43-XX) 1 Probability theory and stochastic processes (60-XX) 1 Statistics (62-XX) 1 Computer science (68-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 178 Publications have been cited 1,452 times in 956 Documents Cited by ▼ Year ▼ Invariant subspaces. Zbl 0269.47003Radjavi, Heydar; Rosenthal, Peter 186 1973 Simultaneous triangularization. Zbl 0981.15007Radjavi, Heydar; Rosenthal, Peter 135 2000 Linear maps preserving commutativity. Zbl 0615.15004Choi, M. D.; Jafarian, A. A.; Radjavi, H. 57 1987 Products of involutions. Zbl 0325.15009Gustafson, W. H.; Halmos, P. R.; Radjavi, H. 53 1976 Invariant subspaces. 2nd ed. Zbl 1043.47001Radjavi, Heydar; Rosenthal, Peter 48 2003 On the diameters of commuting graphs. Zbl 1107.05056Akbari, S.; Mohammadian, A.; Radjavi, H.; Raja, P. 43 2006 Products of self-adjoint operators. Zbl 0182.45904Radjavi, Heydar; Williams, James P. 30 1969 Local multiplications on algebras spanned by idempotents. Zbl 0844.46029The Hadwin Lunch Bunch 26 1994 A trace condition equivalent to simultaneous triangularizability. Zbl 0577.47018Radjavi, Heydar 26 1986 Linear spaces of nilpotent matrices. Zbl 0722.15016Mathes, Ben; Omladič, Matjaž; Radjavi, Heydar 25 1991 On roots of normal operators. Zbl 0215.48705Radjavi, H.; Rosenthal, P. 23 1971 On invariant subspaces and reflexive algebras. Zbl 0187.06201Radjavi, Heydar; Rosenthal, Peter 23 1969 Commutativity-preserving operators on symmetric matrices. Zbl 0547.15007Radjavi, Heydar 18 1984 On positive linear maps preserving invertibility. Zbl 0551.46040Choi, M.-D.; Hadwin, D.; Nordgren, E.; Radjavi, H.; Rosenthal, P. 16 1984 Preserving commutativity. Zbl 0973.15002Omladič, Matjaž; Radjavi, Heydar; Šemrl, Peter 15 2001 On matrix spaces with zero determinant. Zbl 0592.15008Fillmore, P.; Laurie, C.; Radjavi, H. 15 1985 From local to global triangularization. Zbl 0902.47019Radjavi, Heydar; Rosenthal, Peter 14 1997 Structure of \(A^*A - AA^*\). Zbl 0143.16201Radjavi, H. 14 1966 On invariant operator ranges. Zbl 0412.47003Nordgren, E.; Radjabalipour, M.; Radjavi, H.; Rosenthal, P. 13 1979 An operator not satisfying Lomonosov’s hypothesis. Zbl 0451.47003Hadwin, D. W.; Nordgren, E. A.; Radjavi, Heydar; Rosenthal, Peter 13 1980 A sufficient condition that an operator algebra be self-adjoint. Zbl 0218.46063Radjavi, H.; Rosenthal, P. 13 1971 The Engel-Jacobson theorem revisited. Zbl 0645.15010Radjavi, Heydar 13 1987 Limitations on the size of semigroups of matrices. Zbl 1140.15014Radjavi, Heydar; Rosenthal, Peter 12 2008 Products of Hermitian matrices and symmetries. Zbl 0175.30703Radjavi, H. 12 1969 A nil algebra of bounded operators on Hilbert space with semisimple norm closure. Zbl 0631.47034Hadwin, Donald; Nordgren, Eric; Radjabalipour, Mehdi; Radjavi, Heydar; Rosenthal, Peter 12 1986 Triangularizing semigroups of compact operators. Zbl 0579.47041Nordgren, Eric; Radjavi, Heydar; Rosenthal, Peter 12 1984 Nonlinear maps preserving solvability. Zbl 1068.17007Radjavi, Heydar; Šemrl, Peter 11 2004 On almost-invariant subspaces and approximate commutation. Zbl 1288.47008Marcoux, Laurent W.; Popov, Alexey I.; Radjavi, Heydar 11 2013 A finiteness lemma, Brauer’s theorem and other irreducibility results. Zbl 0920.20058Radjabalipour, M.; Radjavi, H. 10 1999 Spectral conditions and reducibility of operator semigroups. Zbl 0766.47010Lambrou, M.; Longstaff, W. E.; Radjavi, H. 10 1992 Most similarity orbits are strongly dense. Zbl 0431.47010Hadwin, D. W.; Nordgren, E. A.; Radjavi, Heydar; Rosenthal, Peter 10 1979 A transitive medial subspace lattice. Zbl 0211.44402Harrison, K. J.; Radjavi, H.; Rosenthal, P. 10 1971 On density of transitive algebras. Zbl 0184.15905Nordgren, E. A.; Radjavi, H.; Rosenthal, P. 10 1969 Matrices for operators and generators of \(B(H)\). Zbl 0197.10801Radjavi, H.; Rosenthal, P. 10 1970 On the reduction and triangularization of semigroups of operators. Zbl 0581.47026Radjavi, Heydar 10 1985 On the geometry of numerical ranges. Zbl 0323.47004Radjabalipour, Mehdi; Radjavi, Heydar 9 1975 Decomposition of matrices into simple involutions. Zbl 0307.15001Radjavi, Heydar 9 1975 The group generated by involutions. Zbl 0431.47001Radjavi, H. 9 1981 Hyperinvariant subspaces for spectral and n-normal operators. Zbl 0229.47004Radjavi, Heydar; Rosenthal, Peter 9 1971 On the congruence numerical range and related functions of matrices. Zbl 0641.15012Choi, M. D.; Laurie, C.; Radjavi, H.; Rosenthal, P. 9 1987 Triangularizing semigroups of quasinilpotent operators with non-negative entries. Zbl 0818.47035Choi, M.-D.; Nordgren, E. A.; Radjavi, H.; Rosenthal, P.; Zhong, Y. 8 1993 On semigroups of matrices with traces in a subfield. Zbl 0817.20064Omladič, M.; Radjabalipour, M.; Radjavi, H. 8 1994 Irreducible semigroups with multiplicative spectral radius. Zbl 0937.47043Omladič, Matjaž; Radjavi, Heydar 8 1997 The total group of a graph. Zbl 0175.20805Behzad, M.; Radjavi, H. 8 1968 An irreducible semigroup of non-negative square-zero operators. Zbl 1011.47004Drnovšek, R.; Kokol-Bukovšek, D.; Livshits, L.; MacDonald, G.; Omladič, M.; Radjavi, H. 8 2002 Semigroups of partial isometries. Zbl 1349.47068Popov, Alexey I.; Radjavi, Heydar 8 2013 On compactness of the best approximant set. Zbl 1005.46008Mohebi, H.; Radjavi, H. 7 2002 Sesquitransitive and localizing operator algebras. Zbl 1143.47006Lomonosov, Victor I.; Radjavi, Heydar; Troitsky, Vladimir G. 7 2008 Structure of regular total graphs. Zbl 0167.52104Behzad, M.; Radjavi, H. 7 1969 The set of irreducible operators is dense. Zbl 0182.45902Radjavi, H.; Rosenthal, P. 7 1969 Orbit-reflexive operators. Zbl 0624.47002Hadwin, Don; Nordgren, Eric; Radjavi, Heydar; Rosenthal, Peter 7 1986 Norms for matrices and operators. Zbl 0661.47010Fong, C. K.; Radjavi, Heydar; Rosenthal, Peter 7 1987 On commutators of idempotents. Zbl 1008.47039Radjavi, Heydar; Rosenthal, Peter 6 2002 The Perron-Frobenius theorem revisited. Zbl 0941.15019Radjavi, Heydar 6 1999 Sums of idempotents. Zbl 0806.15016Laurie, C.; Mathes, B.; Radjavi, H. 6 1994 Principal-ideal bands. Zbl 0938.20044Fillmore, P.; MacDonald, G.; Radjabalipour, M.; Radjavi, H. 6 1999 Transitive spaces of operators. Zbl 1155.47058Davidson, Kenneth R.; Marcoux, Laurent W.; Radjavi, Heydar 6 2008 On triangularization of algebras of operators. Zbl 0465.47010Laurie, C.; Nordgren, E.; Radjavi, H.; Rosenthal, P. 6 1981 On ideals and Lie ideals of compact operators. Zbl 0507.47028Fong, C. K.; Radjavi, H. 6 1983 On a commutator theorem of Robert C. Thompson. Zbl 0548.15010Grunenfelder, L.; Paré, R.; Radjavi, H. 6 1984 On semitransitive collections of operators. Zbl 1082.15027Bernik, J.; Grunenfelder, L.; Mastnak, M.; Radjavi, H.; Troitsky, V. G. 6 2005 A short proof of Hua’s fundamental theorem of the geometry of Hermitian matrices. Zbl 1036.15002Radjavi, Heydar; Šemrl, Peter 6 2003 Linear maps preserving quasi-commutativity. Zbl 1183.15028Radjavi, Heydar; Šemrl, Peter 6 2008 On transitive and reductive operator algebras. Zbl 0265.46071Radjavi, Heydar; Rosenthal, Peter 6 1974 Invariant subspace and weakly closed algebras. Zbl 0167.43302Radjavi, H.; Rosenthal, P. 6 1968 On unitary equivalence of arbitrary matrices. Zbl 0103.25103Radjavi, Heydar 6 1962 Simultaneous triangularization of operators on a Banach space. Zbl 0665.47016Katavolos, A.; Radjavi, H. 6 1990 On simultaneous triangularization of collections of operators. Zbl 0784.47032Hadwin, D.; Nordgren, E.; Radjabalipour, M.; Radjavi, H.; Rosenthal, P. 5 1991 Towards a classification of maximal unicellular bands. Zbl 0811.20061Fillmore, P.; MacDonald, G.; Radjabalipour, M.; Radjavi, H. 5 1994 Permutability of characters on algebras. Zbl 0891.16023Grunenfelder, L.; Guralnick, R.; Košir, T.; Radjavi, H. 5 1997 On permutability and submultiplicativity of spectral radius. Zbl 0844.47003Longstaff, W. E.; Radjavi, H. 5 1995 Operator algebras leaving compact operator ranges invariant. Zbl 0364.47009Nordgren, Eric; Radjavi, Heydar; Rosenthal, Peter 5 1977 Positivity and matrix semigroups. Zbl 1211.15026Bernik, Janez; Mastnak, Mitja; Radjavi, Heydar 5 2011 On commutators and invariant subspaces. Zbl 0455.15011Choi, M.-D.; Laurie, C.; Radjavi, H. 5 1981 Isomorphisms of transitive operator algebras. Zbl 0288.46065Radjavi, Heydar 5 1974 On the topological stable rank of non-selfadjoint operator algebras. Zbl 1147.46030Davidson, K. R.; Levene, R. H.; Marcoux, L. W.; Radjavi, H. 5 2008 Extensions of Lomonosov’s invariant subspace theorem. Zbl 0413.47004Fong, C. K.; Nordgren, E. A.; Radjabalipour, M.; Radjavi, H.; Rosenthal, P. 5 1979 Semitransitive spaces of operators. Zbl 1156.47057Radjavi, Heydar; Troitsky, Vladimir G. 5 2009 Structure of finite, minimal nonabelian groups and triangularization. Zbl 1175.20007Mastnak, Mitja; Radjavi, Heydar 5 2009 On operator algebras and invariant subspaces. Zbl 0186.45301Davis, Chandler; Radjavi, H.; Rosenthal, P. 5 1969 On semitransitive Jordan algebras of matrices. Zbl 1254.17027Bernik, J.; Drnovšek, R.; Kokol Bukovšek, D.; Košir, T.; Omladič, M.; Radjavi, H. 5 2011 Invariant subspaces for semigroups of algebraic operators. Zbl 0921.47007Cigler, Grega; Drnovšek, Roman; Kokol-Bukovšek, Damjana; Omladič, Matjaž; Laffey, Thomas J.; Radjavi, Heydar; Rosenthal, Peter 4 1998 Sublinearity and other spectral conditions on a semigroup. Zbl 0957.47008Radjavi, Heydar 4 2000 Homomorphisms from \({\mathbb {C}}^{*}\) into \(GL_n(\mathbb C)\). Zbl 0964.39024Omladič, Matjaž; Radjavi, Heydar; Šemrl, Peter 4 1999 A geometric equivalent of the invariant subspace problem. Zbl 0348.47002Nordgren, Eric A.; Radjavi, Heydar; Rosenthal, Peter 4 1977 On reducibility of semigroups of compact operators. Zbl 0770.47010Radjavi, Heydar 4 1990 On reducibility of semigroups of compact operators. Zbl 0691.47034Radjavi, Heydar 4 1990 Spectral conditions and band reducibility of operators. Zbl 1259.47050Bernik, J.; Marcoux, L. W.; Radjavi, H. 4 2012 Invariant subspaces for products of Hermitian operators. Zbl 0283.47003Radjavi, Heydar; Rosenthal, Peter 4 1974 Hilbert space operators with compatible off-diagonal corners. Zbl 06879847Livshits, L.; MacDonald, G.; Marcoux, L. W.; Radjavi, H. 4 2018 Polynomial conditions on operator semigroups. Zbl 1119.47302Radjavi, Heydar 4 2005 Every operator is the sum of two irreducible ones. Zbl 0182.45903Radjavi, H. 4 1969 Boundedness stability properties of linear and affine operators. Zbl 0914.47023Edelstein, Michael; Radjavi, Heydar; Tan, Kok-Keong 3 1998 Idempotent completions of partial operator matrices. Zbl 1034.47500Hou, Jinchuan; Radjavi, Heydar; Rosenthal, Peter 3 1999 Operator semigroups with quasinilpotent commutators. Zbl 1099.47503Radjavi, Heydar; Rosenthal, Peter; Shulman, Victor 3 2000 Jordan analogs of the Burnside and Jacobson density theorems. Zbl 0811.46052Grunenfelder, L.; Omladič, M.; Radjavi, H. 3 1993 Semigroups generated by similarity orbits. Zbl 0988.20054Grunenfelder, L.; Omladic, M.; Radjavi, H.; Sourour, A. 3 2001 On operators with reducing invariant subspaces. Zbl 0344.47003Nordgren, Eric; Radjavi, Heydar; Rosenthal, Peter 3 1975 Algebras intertwining compact operators. Zbl 0355.47010Nordgren, E.; Radjabalipour, M.; Radjavi, H.; Rosenthal, P. 3 1977 Irreducible semigroups of matrices with eigenvalue one. Zbl 1053.15010Bernik, J.; Drnovšek, R.; Košir, T.; Omladič, M.; Radjavi, H. 3 2003 Normal operators with highly incompatible off-diagonal corners. Zbl 07282482Marcoux, Laurent W.; Radjavi, Heydar; Zhang, Yuanhang 2 2021 Matrix algebras with a certain compression property. I. Zbl 1462.15016Cramer, Zachary; Marcoux, Laurent W.; Radjavi, Heydar 1 2021 Off-diagonal corners of subalgebras of \(\mathcal{L}(\mathbb{C}^n)\). Zbl 1469.15022Marcoux, Laurent W.; Radjavi, Heydar; Zhang, Yuanhang 2 2020 A note on Mirsky’s theorem. Zbl 1448.15044Hadwin, Don; Radjavi, Heydar 1 2020 Linear preservers of polynomial numerical hulls of matrices. Zbl 1416.15021Aghamollaei, Gh.; Marcoux, L. W.; Radjavi, H. 2 2019 Hilbert space operators with compatible off-diagonal corners. Zbl 06879847Livshits, L.; MacDonald, G.; Marcoux, L. W.; Radjavi, H. 4 2018 Invariant and almost-invariant subspaces for pairs of idempotents. Zbl 1384.47001Bernik, Janez; Radjavi, Heydar 2 2016 On selfadjoint extensions of semigroups of partial isometries. Zbl 1345.47018Bernik, Janez; Marcoux, Laurent W.; Popov, Alexey I.; Radjavi, Heydar 1 2016 Ranges of vector states on irreducible operator semigroups. Zbl 1359.47036Marcoux, L. W.; Omladič, M.; Popov, Alexey I.; Radjavi, H.; Yahaghi, B. R. 1 2016 A spatial version of Wedderburn’s principal theorem. Zbl 1373.15028Livshits, L.; MacDonald, G. W.; Marcoux, L. W.; Radjavi, H. 3 2015 A theorem of Kaplansky revisited. Zbl 1327.15037Radjavi, Heydar; Yahaghi, Bamdad R. 2 2015 A simultaneous Wielandt positivity theorem. Zbl 1328.15019Macdonald, Gordon; Radjavi, Heydar 1 2015 Commutators of small rank and reducibility of operator semigroups. Zbl 1307.47041Jafarian, Ali; Popov, Alexey I.; Radjabalipour, Mehdi; Radjavi, Heydar 1 2014 On almost-invariant subspaces and approximate commutation. Zbl 1288.47008Marcoux, Laurent W.; Popov, Alexey I.; Radjavi, Heydar 11 2013 Semigroups of partial isometries. Zbl 1349.47068Popov, Alexey I.; Radjavi, Heydar 8 2013 Paratransitive algebras of linear operators. I. Zbl 1285.47010Livshits, L.; MacDonald, G.; Marcoux, L. W.; Radjavi, H. 2 2013 Paratransitive algebras of linear operators. II. Zbl 1285.47011Livshits, L.; MacDonald, G.; Marcoux, L. W.; Radjavi, H. 1 2013 Multiplicative maps that are close to an automorphism on algebras of linear transformations. Zbl 1279.15007Marcoux, L. W.; Radjavi, H.; Sourour, A. R. 1 2013 Spectral conditions and band reducibility of operators. Zbl 1259.47050Bernik, J.; Marcoux, L. W.; Radjavi, H. 4 2012 On irreducible algebras spanned by triangularizable matrices. Zbl 1236.15040Radjavi, Heydar; Yahaghi, Bamdad R. 3 2012 Finite groups with submultiplicative spectra. Zbl 1256.20004Grunenfelder, L.; Košir, T.; Omladič, M.; Radjavi, H. 2 2012 Self-adjoint semigroups with nilpotent commutators. Zbl 1236.15039Omladič, Matjaž; Radjavi, Heydar 2 2012 Positivity and matrix semigroups. Zbl 1211.15026Bernik, Janez; Mastnak, Mitja; Radjavi, Heydar 5 2011 On semitransitive Jordan algebras of matrices. Zbl 1254.17027Bernik, J.; Drnovšek, R.; Kokol Bukovšek, D.; Košir, T.; Omladič, M.; Radjavi, H. 5 2011 Nonnegative matrix semigroups with finite diagonals. Zbl 1210.15037Popov, Alexey I.; Radjavi, Heydar; Williamson, Peter 3 2011 Positive matrix semigroups with binary diagonals. Zbl 1235.15018Livshits, L.; MacDonald, G.; Radjavi, H. 3 2011 Universal bounds for matrix semigroups. Zbl 1220.15016Livshits, Leo; Macdonald, Gordon; Radjavi, Heydar 1 2011 Multiplicative diagonals of matrix semigroups. Zbl 1223.15023Livshits, L.; Macdonald, G.; Radjavi, H. 1 2011 Bounded indecomposable semigroups of non-negative matrices. Zbl 1204.15041Gessesse, Hailegebriel; Popov, Alexey I.; Radjavi, Heydar; Spinu, Eugeniu; Tcaciuc, Adi; Troitsky, Vladimir G. 3 2010 Reducibility of semigroups and nilpotent commutators with idempotents of rank two. Zbl 1195.15018Omladič, Matjaž; Radjavi, Heydar 2 2010 Paul Halmos and invariant subspaces. Zbl 1217.47003Radjavi, Heydar; Rosenthal, Peter 2 2010 Semitransitive spaces of operators. Zbl 1156.47057Radjavi, Heydar; Troitsky, Vladimir G. 5 2009 Structure of finite, minimal nonabelian groups and triangularization. Zbl 1175.20007Mastnak, Mitja; Radjavi, Heydar 5 2009 Nilpotent commutators and reducibility of semigroups. Zbl 1171.15016Omladič, Matjaž; Radjavi, Heydar 2 2009 Spectral conditions on Lie and Jordan algebras of compact operators. Zbl 1169.47059Kennedy, Matthew; Radjavi, Heydar 2 2009 Triangularizability of operators with increasing spectrum. Zbl 1200.47011Marcoux, L. W.; Mastnak, M.; Radjavi, H. 1 2009 Limitations on the size of semigroups of matrices. Zbl 1140.15014Radjavi, Heydar; Rosenthal, Peter 12 2008 Sesquitransitive and localizing operator algebras. Zbl 1143.47006Lomonosov, Victor I.; Radjavi, Heydar; Troitsky, Vladimir G. 7 2008 Transitive spaces of operators. Zbl 1155.47058Davidson, Kenneth R.; Marcoux, Laurent W.; Radjavi, Heydar 6 2008 Linear maps preserving quasi-commutativity. Zbl 1183.15028Radjavi, Heydar; Šemrl, Peter 6 2008 On the topological stable rank of non-selfadjoint operator algebras. Zbl 1147.46030Davidson, K. R.; Levene, R. H.; Marcoux, L. W.; Radjavi, H. 5 2008 Erratum: On the topological stable rank of non-selfadjoint operator algebras [Math. Ann. 341, No. 2, 239–253 (2008)]. Zbl 1142.46323Davidson, K. R.; Levene, R. H.; Marcoux, L. W.; Radjavi, H. 3 2008 Realizing irreducible semigroups and real algebras of compact operators. Zbl 1153.47026Bernik, Janez; Mastnak, Mitja; Radjavi, Heydar 3 2008 Invariant sublattices. Zbl 1187.47009Radjavi, Heydar; Troitsky, Vladimir G. 1 2008 Approximate permutability of traces on semigroups of matrices. Zbl 1144.15008Bernik, Janez; Drnovšek, Roman; Košir, Tomaž; Livshits, Leo; Mastnak, Mitja; Omladič, Matjaž; Radjavi, Heydar 2 2007 Topological transitive matrix semigroups. Zbl 1144.47034Livshits, Leo; MacDonald, Gordon; Radjavi, Heydar 1 2007 An approximate, multivariable version of Specht’s theorem. Zbl 1115.15009Marcoux, L. W.; Mastnak, M.; Radjavi, H. 1 2007 The semigroup generated by a unitary orbit of a singular matrix. Zbl 1128.15007Radjavi, H.; Sourour, A. R. 1 2007 On the diameters of commuting graphs. Zbl 1107.05056Akbari, S.; Mohammadian, A.; Radjavi, H.; Raja, P. 43 2006 Semitransitive subspaces of matrices. Zbl 1142.15303Semitransitivity Working Group at LAW’05, Bled 2 2006 On semitransitive collections of operators. Zbl 1082.15027Bernik, J.; Grunenfelder, L.; Mastnak, M.; Radjavi, H.; Troitsky, V. G. 6 2005 Polynomial conditions on operator semigroups. Zbl 1119.47302Radjavi, Heydar 4 2005 Standard triangularization of semigroups of non-negative operators. Zbl 1066.47040MacDonald, Gordon; Radjavi, Heydar 3 2005 How small can nonzero commutators be? Zbl 1078.15013Bernik, Janez; Radjavi, Heydar 2 2005 Transitive action of Lie algebras. Zbl 1137.17310Grunenfelder, L.; Omladič, M.; Radjavi, H. 1 2005 Nonlinear maps preserving solvability. Zbl 1068.17007Radjavi, Heydar; Šemrl, Peter 11 2004 On rings of matrices over division rings. Zbl 1056.15017Radjabalipour, Mehdi; Radjavi, Heydar 2 2004 Invariant subspaces. 2nd ed. Zbl 1043.47001Radjavi, Heydar; Rosenthal, Peter 48 2003 A short proof of Hua’s fundamental theorem of the geometry of Hermitian matrices. Zbl 1036.15002Radjavi, Heydar; Šemrl, Peter 6 2003 Irreducible semigroups of matrices with eigenvalue one. Zbl 1053.15010Bernik, J.; Drnovšek, R.; Košir, T.; Omladič, M.; Radjavi, H. 3 2003 Trace-preserving homomorphisms of semigroups. Zbl 1051.47030Hladnik, Milan; Omladič, Matjaž; Radjavi, Heydar 2 2003 Matrix semigroups with commutable rank. Zbl 1049.20037Livshits, L.; MacDonald, G.; Mathes, B.; Okniński, J.; Radjavi, H. 1 2003 Mean ergodicity for compact operators. Zbl 1064.47017Radjavi, Heydar; Tam, Ping-Kwan; Tan, Kok-Keong 1 2003 An irreducible semigroup of non-negative square-zero operators. Zbl 1011.47004Drnovšek, R.; Kokol-Bukovšek, D.; Livshits, L.; MacDonald, G.; Omladič, M.; Radjavi, H. 8 2002 On compactness of the best approximant set. Zbl 1005.46008Mohebi, H.; Radjavi, H. 7 2002 On commutators of idempotents. Zbl 1008.47039Radjavi, Heydar; Rosenthal, Peter 6 2002 A characterization of commutators of idempotents. Zbl 1018.47027Drnovšek, Roman; Radjavi, Heydar; Rosenthal, Peter 2 2002 Intersections of nest algebras in finite dimensions. Zbl 1010.47045Fillmore, P. A.; Longstaff, W. E.; MacDonald, G. W.; Radjavi, H.; Zhong, Y. 1 2002 Maximal Jordan algebras of matrices with bounded number of eigenvalues. Zbl 1017.17030Grunenfelder, L.; Košir, T.; Omladič, M.; Radjavi, H. 1 2002 Inference for annotated logics over distributive lattices. Zbl 1049.68121Lu, James J.; Murray, Neil V.; Radjavi, Heydar; Rosenthal, Erik; Rosenthal, Peter 1 2002 Preserving commutativity. Zbl 0973.15002Omladič, Matjaž; Radjavi, Heydar; Šemrl, Peter 15 2001 Semigroups generated by similarity orbits. Zbl 0988.20054Grunenfelder, L.; Omladic, M.; Radjavi, H.; Sourour, A. 3 2001 Products of roots of the identity. Zbl 0967.47010Hladnik, M.; Omladic, M.; Radjavi, H. 2 2001 Inequalities for products of spectral radii. Zbl 0989.47005Omladic, M.; Radjavi, H.; Rosenthal, P.; Sourour, A. 1 2001 Simultaneous triangularization. Zbl 0981.15007Radjavi, Heydar; Rosenthal, Peter 135 2000 Sublinearity and other spectral conditions on a semigroup. Zbl 0957.47008Radjavi, Heydar 4 2000 Operator semigroups with quasinilpotent commutators. Zbl 1099.47503Radjavi, Heydar; Rosenthal, Peter; Shulman, Victor 3 2000 On transitive linear semigroups. Zbl 0970.47024Drnovšek, R.; Livshits, L.; MacDonald, G.; Mathes, B.; Radjavi, H.; Semrl, P. 1 2000 A finiteness lemma, Brauer’s theorem and other irreducibility results. Zbl 0920.20058Radjabalipour, M.; Radjavi, H. 10 1999 The Perron-Frobenius theorem revisited. Zbl 0941.15019Radjavi, Heydar 6 1999 Principal-ideal bands. Zbl 0938.20044Fillmore, P.; MacDonald, G.; Radjabalipour, M.; Radjavi, H. 6 1999 Homomorphisms from \({\mathbb {C}}^{*}\) into \(GL_n(\mathbb C)\). Zbl 0964.39024Omladič, Matjaž; Radjavi, Heydar; Šemrl, Peter 4 1999 Idempotent completions of partial operator matrices. Zbl 1034.47500Hou, Jinchuan; Radjavi, Heydar; Rosenthal, Peter 3 1999 On groups generated by elements of prime order. Zbl 0934.15013Grunenfelder, L.; Košir, T.; Omladič, M.; Radjavi, H. 1 1999 Idempotent completions of operator partial matrices. Zbl 0934.47004Hou, Jinchuan; Radjavi, Heydar; Rosenthal, Peter 1 1999 Invariant subspaces for semigroups of algebraic operators. Zbl 0921.47007Cigler, Grega; Drnovšek, Roman; Kokol-Bukovšek, Damjana; Omladič, Matjaž; Laffey, Thomas J.; Radjavi, Heydar; Rosenthal, Peter 4 1998 Boundedness stability properties of linear and affine operators. Zbl 0914.47023Edelstein, Michael; Radjavi, Heydar; Tan, Kok-Keong 3 1998 Reducible semigroups of idempotent operators. Zbl 0995.47002Livshits, L.; MacDonald, G.; Mathes, B.; Radjavi, H. 1 1998 From local to global triangularization. Zbl 0902.47019Radjavi, Heydar; Rosenthal, Peter 14 1997 Irreducible semigroups with multiplicative spectral radius. Zbl 0937.47043Omladič, Matjaž; Radjavi, Heydar 8 1997 Permutability of characters on algebras. Zbl 0891.16023Grunenfelder, L.; Guralnick, R.; Košir, T.; Radjavi, H. 5 1997 Invariant subspaces and spectral conditions on operator semigroups. Zbl 0931.47006Radjavi, Heydar 2 1997 On permutability and submultiplicativity of spectral radius. Zbl 0844.47003Longstaff, W. E.; Radjavi, H. 5 1995 Simultaneous triangularizability, near commutativity and Rota’s theorem. Zbl 0834.47014Jafarian, A. A.; Radjavi, H.; Rosenthal, P.; Sourour, A. R. 1 1995 Local multiplications on algebras spanned by idempotents. Zbl 0844.46029The Hadwin Lunch Bunch 26 1994 On semigroups of matrices with traces in a subfield. Zbl 0817.20064Omladič, M.; Radjabalipour, M.; Radjavi, H. 8 1994 Sums of idempotents. Zbl 0806.15016Laurie, C.; Mathes, B.; Radjavi, H. 6 1994 Towards a classification of maximal unicellular bands. Zbl 0811.20061Fillmore, P.; MacDonald, G.; Radjabalipour, M.; Radjavi, H. 5 1994 Triangularizing semigroups of quasinilpotent operators with non-negative entries. Zbl 0818.47035Choi, M.-D.; Nordgren, E. A.; Radjavi, H.; Rosenthal, P.; Zhong, Y. 8 1993 Jordan analogs of the Burnside and Jacobson density theorems. Zbl 0811.46052Grunenfelder, L.; Omladič, M.; Radjavi, H. 3 1993 ...and 78 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 860 Authors 92 Radjavi, Heydar 31 Rosenthal, Peter 29 Omladič, Matjaž 21 Drnovšek, Roman 20 MacDonald, Gordon Wilson 20 Šemrl, Peter 19 Marcoux, Laurent W. 17 Livshits, Leo 16 Hou, Jinchuan 16 Radjabalipour, Mehdi 16 Shul’man, Viktor Semënovich 15 Bernik, Janez 15 de Seguins Pazzis, Clément 14 Popov, Alexey I. 14 Sourour, Ahmed Ramzi 13 Kokol-Bukovšek, Damjana 13 Mastnak, Mitja 13 Yahaghi, Bamdad R. 12 Longstaff, William Ellison 11 Ko, Eungil 10 Kandić, Marko 10 Wu, Peiyuan 9 Hadwin, Donald W. 9 Košir, Tomaž 9 Kuzma, Bojan 9 Molnár, Lajos 8 Cigler, Grega 8 Feintuch, Avraham 8 Nordgren, Eric A. 8 Wang, Dengyin 7 Brešar, Matej 7 Chebotar, Mikhail A. 7 Fong, Che-Kao 7 Gallardo-Gutiérrez, Eva Antonia 7 Kissin, Edward V. 7 Li, Chi-Kwong 7 Nath, Rajat Kanti 7 Taghavi Jelodar, Ali 7 Turovskii, Yuri V. 7 Zhang, Yuanhang 6 Corach, Gustavo 6 Cowen, Carl C. 6 Cvetko-Vah, Karin 6 Dolinar, Gregor 6 Herrero, Domingo Antonio 6 Jafarian, Ali A. 6 Lacruz, Miguel 6 Ong, Sing-Cheong 6 Troitsky, Vladimir G. 5 Akbari, Saieed 5 Choi, Man-Duen 5 Gau, Hwa-Long 5 Guterman, Alexander Èmilevich 5 Kittaneh, Fuad 5 Lomonosov, Victor I. 5 Müller, Vladimír 5 Tcaciuc, Adi 5 Wang, Jin-Hsien 4 Arias, M. Laura 4 Behzad, Mehdi 4 Cao, Xiaohong 4 Chen, Zhengxin 4 De La Cruz, Ralph John Lamadrid 4 Đoković, Dragomir Ž. 4 Dolžan, David 4 Duggal, Bhagwati Prashad 4 Ellers, Erich Werner 4 Fillmore, Peter A. 4 Hou, Xin 4 Huang, Li 4 Ji, Youqing 4 Kramar Fijavž, Marjeta 4 Laffey, Thomas J. 4 Lei, Tiangang 4 Lev, Arieh 4 Liu, Cheng-Kai 4 Markova, Olga V. 4 Mecheri, Salah 4 Shitov, Yaroslav Nikolaevich 4 Šivic, Klemen 4 Słowik, Roksana 4 Tsing, Nam-Kiu 3 Azoff, Edward A. 3 Botha, J. D. 3 Bračič, Janko 3 Chan, Kit Chak 3 Chen, Alatancang 3 Cohen, Jo-Ann D. 3 Dong, Aiju 3 Dubi, Chen 3 Dutta, Parama 3 Enomoto, Masatoshi 3 Foiaş, Ciprian Ilie 3 Froelich, John 3 Gilfeather, Frank L. 3 Gonzalez, María Celeste 3 Grunenfelder, Luzius 3 Halmos, Paul Richard 3 Huhtanen, Marko 3 Ikramov, Saidkhakim Dododshanovich ...and 760 more Authors all top 5 Cited in 172 Serials 221 Linear Algebra and its Applications 107 Proceedings of the American Mathematical Society 59 Linear and Multilinear Algebra 53 Journal of Functional Analysis 47 Journal of Mathematical Analysis and Applications 32 Transactions of the American Mathematical Society 30 Integral Equations and Operator Theory 19 Communications in Algebra 19 Journal of Algebra 14 Positivity 12 Semigroup Forum 11 Mathematische Annalen 11 Journal of Mathematical Sciences (New York) 10 Acta Mathematica Sinica. 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