Edit Profile Lam, Tsit-Yuen Compute Distance To: Compute Author ID: lam.tsit-yuen Published as: Lam, T.; Lam, T. Y.; Lam, T.-Y.; Lam, Tsit Yuen; Lam, Tsit-Yuen Homepage: https://math.berkeley.edu/~lam/html/ External Links: MGP · Wikidata · GND Documents Indexed: 140 Publications since 1966, including 15 Books Biographic References: 1 Publication all top 5 Co-Authors 40 single-authored 18 Khurana, Dinesh 17 Elman, Richard S. 14 Leroy, André Gérard 11 Choi, Man-Duen 9 Nielsen, Pace P. 9 Reznick, Bruce 7 Reiner, Irving 6 Wadsworth, Adrian R. 4 Leung, Ka Hin 3 Jain, Surender Kumar 3 Swan, Richard Gordon 3 Tignol, Jean-Pierre 3 Wang, Zhou 3 Zhou, Yiqiang 2 Camillo, Victor P. 2 Chen, Jianlong 2 Filaseta, Michael A. 2 Leep, David B. 2 Matczuk, Jerzy 2 Nicholson, W. Keith 2 Prestel, Alexander 2 Reyes, Manuel L. 2 Shapiro, Daniel Byron 2 Smith, Tara L. 1 Alahmadi, Adel N. 1 Bass, Hyman 1 Borisov, Alexander 1 Calugareanu, Grigore Dumitru jun. 1 Dai, Zhendong 1 Dai, Zhongda 1 Dai, Zhongduo 1 Dai, Zong-Duo 1 Danchev, Peter Vassilev 1 Dugas, Alex S. 1 Feng, Lianggui 1 Grover, Harpreet K. 1 Gupta, Ram Niwas 1 Jacob, Bill 1 Jodeit, Max jun. 1 Khurana, Anjana 1 Knebusch, Manfred 1 Knus, Max-Albert 1 Kodiyalam, Vijay 1 Magid, Andy Roy 1 Milgram, Richard James 1 Murray, Will 1 Ozturk, Adem 1 Peng, Chung-Kang 1 Reiner, T. 1 Robson, Robert O. 1 Rosenberg, Alex 1 Shomron, Noam 1 Siu, Man Keung 1 Şter, Janez 1 Trifonov, Ognian 1 Wigner, David all top 5 Serials 17 Journal of Algebra 6 Mathematische Zeitschrift 5 Journal of Pure and Applied Algebra 5 Journal of Algebra and its Applications 4 American Mathematical Monthly 4 Proceedings of the American Mathematical Society 4 Expositiones Mathematicae 3 Mathematische Annalen 3 Transactions of the American Mathematical Society 3 Graduate Texts in Mathematics 3 Problem Books in Mathematics 2 Communications in Algebra 2 Rocky Mountain Journal of Mathematics 2 Acta Arithmetica 2 American Journal of Mathematics 2 Commentarii Mathematici Helvetici 2 Inventiones Mathematicae 2 Journal für die Reine und Angewandte Mathematik 2 The Quarterly Journal of Mathematics. Oxford Second Series 2 L’Enseignement Mathématique. 2e Série 2 Notices of the American Mathematical Society 2 Algebras and Representation Theory 2 Bulletin of the American Mathematical Society 2 Contemporary Mathematics 1 Israel Journal of Mathematics 1 Linear and Multilinear Algebra 1 Mathematics Magazine 1 Annales Scientifiques de l’École Normale Supérieure. Quatrième Série 1 Archiv der Mathematik 1 Canadian Mathematical Bulletin 1 Illinois Journal of Mathematics 1 Indagationes Mathematicae 1 Publications Mathématiques 1 Journal of Number Theory 1 Publicationes Mathematicae 1 Discrete & Computational Geometry 1 International Journal of Algebra and Computation 1 Linear Algebra and its Applications 1 Proceedings of the National Academy of Sciences of the United States of America 1 Bulletin of the American Mathematical Society. New Series 1 Bulletin de la Société Mathématique de Belgique. Série A 1 Bulletin of the Belgian Mathematical Society - Simon Stevin 1 Finite Fields and their Applications 1 The Bulletin of the Hong Kong Mathematical Society 1 Graduate Studies in Mathematics 1 Lecture Notes in Mathematics 1 Monographies de l’Enseignement Mathématique 1 Regional Conference Series in Mathematics 1 Springer Monographs in Mathematics all top 5 Fields 58 Associative rings and algebras (16-XX) 48 Number theory (11-XX) 33 Linear and multilinear algebra; matrix theory (15-XX) 32 Field theory and polynomials (12-XX) 18 Commutative algebra (13-XX) 12 Group theory and generalizations (20-XX) 11 Algebraic geometry (14-XX) 7 \(K\)-theory (19-XX) 5 General and overarching topics; collections (00-XX) 5 Category theory; homological algebra (18-XX) 4 History and biography (01-XX) 3 Algebraic topology (55-XX) 2 Nonassociative rings and algebras (17-XX) 1 Combinatorics (05-XX) 1 Order, lattices, ordered algebraic structures (06-XX) 1 Topological groups, Lie groups (22-XX) 1 Special functions (33-XX) 1 Operator theory (47-XX) 1 Convex and discrete geometry (52-XX) 1 General topology (54-XX) 1 Mathematics education (97-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 124 Publications have been cited 3,911 times in 2,982 Documents Cited by ▼ Year ▼ Lectures on modules and rings. Zbl 0911.16001Lam, T. Y. 571 1999 The algebraic theory of quadratic forms. Zbl 0259.10019Lam, T. Y. 383 1973 A first course in noncommutative rings. Zbl 0728.16001Lam, T. Y. 373 1991 A first course in noncommutative rings. 2nd ed. Zbl 0980.16001Lam, T. Y. 314 2001 Introduction to quadratic forms over fields. Zbl 1068.11023Lam, T. Y. 230 2005 Serre’s conjecture. Zbl 0373.13004Lam, T. Y. 148 1978 Serre’s problem on projective modules. Zbl 1101.13001Lam, T. Y. 82 2005 Orderings, valuations and quadratic forms. Zbl 0516.12001Lam, T. Y. 82 1983 Pfister forms and \(K\)-theory of fields. Zbl 0246.15029Elman, Richard; Lam, T. Y. 69 1972 Sums of squares of real polynomials. Zbl 0821.11028Choi, M. D.; Lam, T. Y.; Reznick, B. 60 1995 Quadratic forms over formally real fields and Pythagorean fields. Zbl 0259.12101Elman, Richard; Lam, T. Y. 60 1972 On vanishing sums of roots of unity. Zbl 1099.11510Lam, T. Y.; Leung, K. H. 56 2000 Extremal positive semidefinite forms. Zbl 0347.15009Choi, Man-Duen; Lam, Tsit-Yuen 52 1977 An introduction to real algebra. Zbl 0577.14016Lam, T. Y. 49 1984 Exercises in classical ring theory. 2nd ed. Zbl 1031.16001Lam, T. Y. 48 2003 The algebraic theory of quadratic forms. 2nd printing, with revisions. Zbl 0437.10006Lam, T. Y. 48 1980 On some Hasse principles over formally real fields. Zbl 0277.15013Elman, Richard; Lam, Tsit-Yuen; Prestel, Alexander 48 1973 Continuous modules are clean. Zbl 1114.16023Camillo, V. P.; Khurana, D.; Lam, T. Y.; Nicholson, W. K.; Zhou, Y. 46 2006 Primeness, semiprimeness and prime radical of Ore extensions. Zbl 0879.16016Lam, T. Y.; Leroy, A.; Matczuk, J. 43 1997 Induction theorems for Grothendieck groups and Whitehead groups of finite groups. Zbl 0164.02703Lam, Tsit-Yuen 40 1968 Vandermonde and Wronskian matrices over division rings. Zbl 0657.15015Lam, T. Y.; Leroy, A. 39 1988 Quadratic forms under algebraic extensions. Zbl 0302.10025Elman, Richard; Lam, T. Y. 38 1976 A crash course on stable range, cancellation, substitution and exchange. Zbl 1072.16013Lam, T. Y. 37 2004 Even symmetric sextics. Zbl 0654.10024Choi, M. D.; Lam, T. Y.; Reznick, Bruce 30 1987 Real zeros for positive semidefinite forms. I. Zbl 0415.10018Choi, Man-Duen; Lam, Tsit-Yuen; Reznick, Bruce 29 1980 Witt rings and Brauer groups under multiquadratic extensions. I. Zbl 0492.10014Elman, Richard; Lam, T. Y.; Tignol, J.-P.; Wadsaworth, Adrian R. 28 1983 The Pythagoras number of some affine algebras and local algebras. Zbl 0499.12018Choi, M. D.; Dai, Z. D.; Lam, T. Y.; Reznick, B. 28 1982 Artin exponent of finite groups. Zbl 0277.20006Lam, Tsit-Yuen 27 1968 Clean matrices and unit-regular matrices. Zbl 1067.16050Khurana, Dinesh; Lam, T. Y. 26 2004 Biquaternion algebras and quartic extensions. Zbl 0801.11048Lam, Tsit Yuen; Leep, David B.; Tignol, Jean-Pierre 26 1993 Rings with internal cancellation. Zbl 1076.16004Khurana, Dinesh; Lam, T. Y. 24 2005 A general theory of Vandermonde matrices. Zbl 0598.15015Lam, T. Y. 24 1986 Classification theorems for quadratic forms over fields. Zbl 0297.15024Elman, Richard; Lam, T. Y. 24 1974 Quadratic forms and the u-invariant. Zbl 0267.10029Elman, Richard; Lam, T. Y. 24 1973 Quadratic forms and the u-invariant. I. Zbl 0244.10020Elman, Richard; Lam, Tsit-Yuen 24 1973 Rings with unipotent units. Zbl 1374.16089Danchev, Peter Vassilev; Lam, Tsit-Yuen 23 2016 On the irreducibility of the generalized Laguerre polynomials. Zbl 1010.12001Filaseta, M.; Lam, T.-Y. 23 2002 Modules with isomorphic multiples and rings with isomorphic matrix rings. A survey. Zbl 0962.16002Lam, Tsit-Yuen 23 1999 Orderings under field extensions. Zbl 0398.12019Elman, R.; Lam, T. Y.; Wadsworth, A. R. 23 1979 Exercises in modules and rings. Zbl 1121.16001Lam, T. Y. 22 2007 Quasi-duo rings and stable range descent. Zbl 1071.16003Lam, T. Y.; Dugas, Alex S. 22 2005 On the cyclotomic polynomial \(\Phi_{pq}(X)\). Zbl 0868.11016Lam, T. Y.; Leung, K. H. 21 1996 Exercises in classical ring theory. Zbl 0823.16001Lam, T. Y. 21 1994 Multiplicative maps of matrix semi-groups. Zbl 0176.29502Jodeit, M. jun.; Lam, T. Y. 19 1969 Amenable fields and Pfister extensions. Appendix I: Excellent subrings of Witt rings. Appendix II: Excellence of \(F(\varphi)/F\) for 2-fold Pfister forms (by Jon Kr. Arason). Zbl 0385.12010Elman, Richard; Lam, T.-Y.; Wadsworth, Adrian R. 17 1977 Wedderburn polynomials over division rings. I. Zbl 1047.16010Lam, T. Y.; Leroy, André 16 2004 The theory of ordered fields. Zbl 0442.12024Lam, T. Y. 16 1980 Young diagrams, Schur functions, the Gale-Ryser theorem and a conjecture or Snapper. Zbl 0373.05009Lam, T. Y. 16 1977 An old question of Hilbert. Zbl 0382.12010Choi, Man-Duen; Lam, Tsit-Yuen 13 1977 Discriminants of involutions on biquaternion algebras. Zbl 0828.11023Knus, M.-A.; Lam, T. Y.; Shapiro, D. B.; Tignol, J.-P. 12 1995 Hilbert 90 theorems over division rings. Zbl 0820.16024Lam, T. Y.; Leroy, A. 12 1994 Levels in algebra and topology. Zbl 0546.10017Dai, Z. D.; Lam, T. Y. 12 1984 Quadratic forms under multiquadratic extensions. Zbl 0425.10021Elman, Richard; Lam, T. Y.; Wadsworth, Adrian R. 12 1980 \(K_0\) and \(K_1\) - an introduction to algebraic \(K\)-theory. Zbl 0323.18006Lam, T. Y.; Siu, M. K. 12 1975 Euclidean pairs and quasi-Euclidean rings. Zbl 1318.16036Alahmadi, Adel; Jain, S. K.; Lam, T. Y.; Leroy, A. 11 2014 Jacobson’s Lemma for Drazin inverses. Zbl 1294.15005Lam, T. Y.; Nielsen, Pace P. 11 2014 Wedderburn polynomials over division rings. II. Zbl 1173.16011Lam, T. Y.; Leroy, A.; Ozturk, A. 11 2008 A prime ideal principle in commutative algebra. Zbl 1168.13002Lam, T. Y.; Reyes, Manuel L. 11 2008 Algebraic conjugacy classes and skew polynomial rings. Zbl 0694.16002Lam, T. Y.; Leroy, André 11 1988 Function fields of Pfister forms. Zbl 0395.10028Elman, R.; Lam, T. Y.; Wadsworth, A. R. 11 1979 Series summation of stably free modules. Zbl 0316.16025Lam, T. Y. 11 1976 Relative Grothendieck groups. Zbl 0185.06901Lam, T. Y.; Reiner, Irving 11 1969 On the linkage of quaternion algebras. Zbl 1044.16012Lam, T. Y. 10 2002 Rings of idempotent stable range one. Zbl 1255.16013Wang, Zhou; Chen, Jianlong; Khurana, Dinesh; Lam, Tsit-Yuen 9 2012 A theorem of Burnside on matrix rings. Zbl 0913.15011Lam, T. Y. 9 1998 Homomorphisms between Ore extensions. Zbl 0746.16023Lam, T. Y.; Leroy, A. 9 1992 Levels in algebra and topology. Zbl 0435.10016Dai, Z. D.; Lam, T. Y.; Peng, C. K. 9 1980 Sums of squares in some integral domains. Zbl 0433.10010Choi, M. D.; Lam, T. Y.; Reznick, B.; Rosenberg, Alex 9 1980 Ten lectures on quadratic forms over fields. Zbl 0396.10008Lam, T. Y. 9 1977 Representations of finite groups: A hundred years. I, II. Zbl 0924.01008Lam, T. Y. 8 1998 Pfister ideals in Witt rings. Zbl 0401.10032Elman, R.; Lam, T. Y.; Wadsworth, A. R. 8 1979 Corner ring theory: a generalization of Peirce decompositions. I. Zbl 1121.16011Lam, T. Y. 7 2006 Invariant and semi-invariant polynomials in skew polynomial rings. Zbl 0685.16006Lam, T. Y.; Leung, K. H.; Leroy, A.; Matczuk, J. 7 1989 Reduction theorems for relative Grothendieck rings. Zbl 0185.06802Lam, T. Y.; Reiner, Irving 7 1969 Exchange elements in rings, and the equation \(XA-BX=I\). Zbl 1396.16033Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 6 2017 Sums of units in rings. Zbl 1295.16024Grover, Harpreet K.; Wang, Zhou; Khurana, Dinesh; Chen, Jianlong; Lam, T. Y. 6 2014 Unit regular elements in corner rings. Zbl 0923.16010Lam, T. Y.; Murray, Will 6 1997 On the quaternion symbol homomorphism \(g_F: k_2F \rightarrow B(F)\). Zbl 0267.10030Elman, Richard; Lam, T. Y. 6 1973 Generalized commutators in matrix rings. Zbl 1255.15015Khurana, Dinesh; Lam, T. Y. 5 2012 Rings of square stable range one. Zbl 1237.19004Khurana, Dinesh; Lam, T. Y.; Wang, Zhou 5 2011 Hamilton’s quaternions. Zbl 1076.16015Lam, T. Y. 5 2003 Sums of \(2m\)-th powers of rational functions in one variable over real closed fields. Zbl 0859.12002Choi, M. D.; Lam, T. Y.; Prestel, A.; Reznick, B. 5 1996 On Yuzvinsky’s monomial pairings. Zbl 0802.11013Lam, T. Y.; Smith, Tara L. 5 1993 Restriction maps on relative Grothendieck rings. Zbl 0187.29801Lam, T. Y.; Reiner, Irving 5 1970 Finite generation of Grothendieck rings relative to cyclic subgroups. Zbl 0186.04602Lam, T. Y.; Reiner, Irving 5 1969 Relative Grothendieck rings. Zbl 0177.04503Lam, T. Y.; Reiner, Irving 5 1969 Fine rings: a new class of simple rings. Zbl 1397.16036Călugăreanu, G.; Lam, T. Y. 4 2016 Uniquely clean elements in rings. Zbl 1335.16025Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P.; Zhou, Yiqiang 4 2015 Rings over which the transpose of every invertible matrix is invertible. Zbl 1182.16033Gupta, R. N.; Khurana, Anjana; Khurana, Dinesh; Lam, T. Y. 4 2009 Determinantal ideals, Pfaffian ideals, and the principal minor theorem. Zbl 1147.15300Kodiyalam, Vijay; Lam, T. Y.; Swan, R. G. 4 2008 Lattice polytopes with distinct pair-sums. Zbl 1002.52013Choi, M. D.; Lam, T. Y.; Reznick, B. 4 2002 Finite groups embeddable in division rings. Zbl 1002.12003Lam, T. Y. 4 2001 Principal one-sided ideals in Ore polynomial rings. Zbl 0967.16015Lam, T. Y.; Leroy, André 4 2000 On the Clifford-Littlewood-Eckmann groups: A new look at periodicity mod 8. Zbl 0726.11025Lam, T. Y.; Smith, Tara 4 1989 Fields of \(u\)-invariant 6 after A. Merkurjev. Zbl 0683.10018Lam, T. Y. 4 1989 Determination of \(k_ n (n \geq 3)\) for global fields. Zbl 0207.34901Elman, R.; Lam, T. Y. 4 1972 Two-sided properties of elements in exchange rings. Zbl 1337.16007Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 3 2015 Inner inverses and inner annihilators in rings. Zbl 1327.16023Lam, T. Y.; Nielsen, Pace P. 3 2014 Invertible commutators in matrix rings. Zbl 1216.15010Khurana, Dinesh; Lam, T. Y. 3 2011 Recognition and computations of matrix rings. Zbl 0883.16020Lam, T. Y.; Leroy, André 3 1996 Jacobson pairs and Bott-Duffin decompositions in rings. Zbl 1429.16008Lam, T. Y.; Nielsen, Pace P. 1 2019 An ensemble of idempotent lifting hypotheses. Zbl 1416.16011Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 2 2018 Exchange elements in rings, and the equation \(XA-BX=I\). Zbl 1396.16033Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 6 2017 Rings with unipotent units. Zbl 1374.16089Danchev, Peter Vassilev; Lam, Tsit-Yuen 23 2016 Fine rings: a new class of simple rings. Zbl 1397.16036Călugăreanu, G.; Lam, T. Y. 4 2016 Exchange rings, exchange equations, and lifting properties. Zbl 1372.16042Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 1 2016 Uniquely clean elements in rings. Zbl 1335.16025Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P.; Zhou, Yiqiang 4 2015 Two-sided properties of elements in exchange rings. Zbl 1337.16007Khurana, Dinesh; Lam, T. Y.; Nielsen, Pace P. 3 2015 Euclidean pairs and quasi-Euclidean rings. Zbl 1318.16036Alahmadi, Adel; Jain, S. K.; Lam, T. Y.; Leroy, A. 11 2014 Jacobson’s Lemma for Drazin inverses. Zbl 1294.15005Lam, T. Y.; Nielsen, Pace P. 11 2014 Sums of units in rings. Zbl 1295.16024Grover, Harpreet K.; Wang, Zhou; Khurana, Dinesh; Chen, Jianlong; Lam, T. Y. 6 2014 Inner inverses and inner annihilators in rings. Zbl 1327.16023Lam, T. Y.; Nielsen, Pace P. 3 2014 Rings of idempotent stable range one. Zbl 1255.16013Wang, Zhou; Chen, Jianlong; Khurana, Dinesh; Lam, Tsit-Yuen 9 2012 Generalized commutators in matrix rings. Zbl 1255.15015Khurana, Dinesh; Lam, T. Y. 5 2012 A quantum-trace determinantal formula for matrix commutators, and applications. Zbl 1236.15018Khurana, Dinesh; Lam, T. Y.; Shomron, Noam 2 2012 Rings of square stable range one. Zbl 1237.19004Khurana, Dinesh; Lam, T. Y.; Wang, Zhou 5 2011 Invertible commutators in matrix rings. Zbl 1216.15010Khurana, Dinesh; Lam, T. Y. 3 2011 Rings over which the transpose of every invertible matrix is invertible. Zbl 1182.16033Gupta, R. N.; Khurana, Anjana; Khurana, Dinesh; Lam, T. Y. 4 2009 Oka and Ako ideal families in commutative rings. Zbl 1182.13003Lam, T. Y.; Reyes, Manuel L. 2 2009 Ore extensions and \(V\)-domains. Zbl 1182.16020Jain, S. K.; Lam, T. Y.; Leroy, A. 2 2009 Wedderburn polynomials over division rings. II. Zbl 1173.16011Lam, T. Y.; Leroy, A.; Ozturk, A. 11 2008 A prime ideal principle in commutative algebra. Zbl 1168.13002Lam, T. Y.; Reyes, Manuel L. 11 2008 Determinantal ideals, Pfaffian ideals, and the principal minor theorem. Zbl 1147.15300Kodiyalam, Vijay; Lam, T. Y.; Swan, R. G. 4 2008 Exercises in modules and rings. Zbl 1121.16001Lam, T. Y. 22 2007 Continuous modules are clean. Zbl 1114.16023Camillo, V. P.; Khurana, D.; Lam, T. Y.; Nicholson, W. K.; Zhou, Y. 46 2006 Corner ring theory: a generalization of Peirce decompositions. I. Zbl 1121.16011Lam, T. Y. 7 2006 Introduction to quadratic forms over fields. Zbl 1068.11023Lam, T. Y. 230 2005 Serre’s problem on projective modules. Zbl 1101.13001Lam, T. Y. 82 2005 Rings with internal cancellation. Zbl 1076.16004Khurana, Dinesh; Lam, T. Y. 24 2005 Quasi-duo rings and stable range descent. Zbl 1071.16003Lam, T. Y.; Dugas, Alex S. 22 2005 A crash course on stable range, cancellation, substitution and exchange. Zbl 1072.16013Lam, T. Y. 37 2004 Clean matrices and unit-regular matrices. Zbl 1067.16050Khurana, Dinesh; Lam, T. Y. 26 2004 Wedderburn polynomials over division rings. I. Zbl 1047.16010Lam, T. Y.; Leroy, André 16 2004 On subgroups of prime index. Zbl 1086.20015Lam, T. Y. 1 2004 Exercises in classical ring theory. 2nd ed. Zbl 1031.16001Lam, T. Y. 48 2003 Hamilton’s quaternions. Zbl 1076.16015Lam, T. Y. 5 2003 On the irreducibility of the generalized Laguerre polynomials. Zbl 1010.12001Filaseta, M.; Lam, T.-Y. 23 2002 On the linkage of quaternion algebras. Zbl 1044.16012Lam, T. Y. 10 2002 Lattice polytopes with distinct pair-sums. Zbl 1002.52013Choi, M. D.; Lam, T. Y.; Reznick, B. 4 2002 A first course in noncommutative rings. 2nd ed. Zbl 0980.16001Lam, T. Y. 314 2001 Finite groups embeddable in division rings. Zbl 1002.12003Lam, T. Y. 4 2001 On vanishing sums of roots of unity. Zbl 1099.11510Lam, T. Y.; Leung, K. H. 56 2000 Principal one-sided ideals in Ore polynomial rings. Zbl 0967.16015Lam, T. Y.; Leroy, André 4 2000 On the equality row rank and column rank. Zbl 0955.15001Lam, T. Y. 1 2000 Lectures on modules and rings. Zbl 0911.16001Lam, T. Y. 571 1999 Modules with isomorphic multiples and rings with isomorphic matrix rings. A survey. Zbl 0962.16002Lam, Tsit-Yuen 23 1999 Classes of polynomials having only one non-cyclotomic irreducible factor. Zbl 0935.11039Borisov, A.; Filaseta, M.; Lam, T. Y.; Trifonov, O. 1 1999 A theorem of Burnside on matrix rings. Zbl 0913.15011Lam, T. Y. 9 1998 Representations of finite groups: A hundred years. I, II. Zbl 0924.01008Lam, T. Y. 8 1998 On uniform dimensions of ideals in right nonsingular rings. Zbl 0931.16001Jain, S. K.; Lam, T. Y.; Leroy, André 2 1998 Primeness, semiprimeness and prime radical of Ore extensions. Zbl 0879.16016Lam, T. Y.; Leroy, A.; Matczuk, J. 43 1997 Unit regular elements in corner rings. Zbl 0923.16010Lam, T. Y.; Murray, Will 6 1997 On the cyclotomic polynomial \(\Phi_{pq}(X)\). Zbl 0868.11016Lam, T. Y.; Leung, K. H. 21 1996 Sums of \(2m\)-th powers of rational functions in one variable over real closed fields. Zbl 0859.12002Choi, M. D.; Lam, T. Y.; Prestel, A.; Reznick, B. 5 1996 Recognition and computations of matrix rings. Zbl 0883.16020Lam, T. Y.; Leroy, André 3 1996 Vanishing sums of \(m\)th roots of unity in finite fields. Zbl 0916.11018Lam, T. Y.; Leung, K. H. 1 1996 Sums of squares of real polynomials. Zbl 0821.11028Choi, M. D.; Lam, T. Y.; Reznick, B. 60 1995 Discriminants of involutions on biquaternion algebras. Zbl 0828.11023Knus, M.-A.; Lam, T. Y.; Shapiro, D. B.; Tignol, J.-P. 12 1995 A lifting theorem, and rings with isomorphic matrix rings. Zbl 0902.16026Lam, T. Y. 2 1995 Exercises in classical ring theory. Zbl 0823.16001Lam, T. Y. 21 1994 Hilbert 90 theorems over division rings. Zbl 0820.16024Lam, T. Y.; Leroy, A. 12 1994 Recent advances in real algebraic geometry and quadratic forms. Proceedings of the RAGSQUAD year, Berkeley, CA, USA, 1990-1991. Zbl 0788.00051Jacob, William B. (ed.); Lam, Tsit-Yuen (ed.); Robson, Robert O. (ed.) 1 1994 Biquaternion algebras and quartic extensions. Zbl 0801.11048Lam, Tsit Yuen; Leep, David B.; Tignol, Jean-Pierre 26 1993 On Yuzvinsky’s monomial pairings. Zbl 0802.11013Lam, T. Y.; Smith, Tara L. 5 1993 Combinatorial structure on the automorphism group of \(S_ 6\). Zbl 0819.20004Lam, T. Y.; Leep, David B. 3 1993 Homomorphisms between Ore extensions. Zbl 0746.16023Lam, T. Y.; Leroy, A. 9 1992 A first course in noncommutative rings. Zbl 0728.16001Lam, T. Y. 373 1991 Positive sextics and Schur’s inequalities. Zbl 0784.11013Choi, M. D.; Lam, T. Y.; Reznick, B. 2 1991 Invariant and semi-invariant polynomials in skew polynomial rings. Zbl 0685.16006Lam, T. Y.; Leung, K. H.; Leroy, A.; Matczuk, J. 7 1989 On the Clifford-Littlewood-Eckmann groups: A new look at periodicity mod 8. Zbl 0726.11025Lam, T. Y.; Smith, Tara 4 1989 Fields of \(u\)-invariant 6 after A. Merkurjev. Zbl 0683.10018Lam, T. Y. 4 1989 Vandermonde and Wronskian matrices over division rings. Zbl 0657.15015Lam, T. Y.; Leroy, A. 39 1988 Algebraic conjugacy classes and skew polynomial rings. Zbl 0694.16002Lam, T. Y.; Leroy, André 11 1988 On the number of solutions of \(x^{p^ k}=a\) in a p-group. Zbl 0632.20014Lam, T. Y. 2 1988 Even symmetric sextics. Zbl 0654.10024Choi, M. D.; Lam, T. Y.; Reznick, Bruce 30 1987 A general theory of Vandermonde matrices. Zbl 0598.15015Lam, T. Y. 24 1986 An introduction to real algebra. Zbl 0577.14016Lam, T. Y. 49 1984 Levels in algebra and topology. Zbl 0546.10017Dai, Z. D.; Lam, T. Y. 12 1984 Orderings, valuations and quadratic forms. Zbl 0516.12001Lam, T. Y. 82 1983 Witt rings and Brauer groups under multiquadratic extensions. I. Zbl 0492.10014Elman, Richard; Lam, T. Y.; Tignol, J.-P.; Wadsaworth, Adrian R. 28 1983 The Pythagoras number of some affine algebras and local algebras. Zbl 0499.12018Choi, M. D.; Dai, Z. D.; Lam, T. Y.; Reznick, B. 28 1982 Transversal zeros and positive semidefinite forms. Zbl 0506.10019Choi, Man-Duen; Knebusch, Manfred; Lam, Tsit-Yuen; Reznick, Bruce 3 1982 The square class invariant for pythagorean fields. Zbl 0493.10024Shapiro, Daniel B.; Lam, T.-Y. 1 1982 The algebraic theory of quadratic forms. 2nd printing, with revisions. Zbl 0437.10006Lam, T. Y. 48 1980 Real zeros for positive semidefinite forms. I. Zbl 0415.10018Choi, Man-Duen; Lam, Tsit-Yuen; Reznick, Bruce 29 1980 The theory of ordered fields. Zbl 0442.12024Lam, T. Y. 16 1980 Quadratic forms under multiquadratic extensions. Zbl 0425.10021Elman, Richard; Lam, T. Y.; Wadsworth, Adrian R. 12 1980 Levels in algebra and topology. Zbl 0435.10016Dai, Z. D.; Lam, T. Y.; Peng, C. K. 9 1980 Sums of squares in some integral domains. Zbl 0433.10010Choi, M. D.; Lam, T. Y.; Reznick, B.; Rosenberg, Alex 9 1980 Orderings under field extensions. Zbl 0398.12019Elman, R.; Lam, T. Y.; Wadsworth, A. R. 23 1979 Function fields of Pfister forms. Zbl 0395.10028Elman, R.; Lam, T. Y.; Wadsworth, A. R. 11 1979 Pfister ideals in Witt rings. Zbl 0401.10032Elman, R.; Lam, T. Y.; Wadsworth, A. R. 8 1979 Serre’s conjecture. Zbl 0373.13004Lam, T. Y. 148 1978 Extremal positive semidefinite forms. Zbl 0347.15009Choi, Man-Duen; Lam, Tsit-Yuen 52 1977 Amenable fields and Pfister extensions. Appendix I: Excellent subrings of Witt rings. Appendix II: Excellence of \(F(\varphi)/F\) for 2-fold Pfister forms (by Jon Kr. Arason). Zbl 0385.12010Elman, Richard; Lam, T.-Y.; Wadsworth, Adrian R. 17 1977 Young diagrams, Schur functions, the Gale-Ryser theorem and a conjecture or Snapper. Zbl 0373.05009Lam, T. Y. 16 1977 An old question of Hilbert. Zbl 0382.12010Choi, Man-Duen; Lam, Tsit-Yuen 13 1977 Ten lectures on quadratic forms over fields. Zbl 0396.10008Lam, T. Y. 9 1977 Quadratic forms under algebraic extensions. Zbl 0302.10025Elman, Richard; Lam, T. Y. 38 1976 Series summation of stably free modules. Zbl 0316.16025Lam, T. Y. 11 1976 ...and 24 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 2,749 Authors 52 Lam, Tsit-Yuen 31 Chen, Huanyin 30 Zhou, Yiqiang 26 Nielsen, Pace P. 25 Leroy, André Gérard 24 Khurana, Dinesh 24 Tignol, Jean-Pierre 21 Birkenmeier, Gary Francis 21 Hashemi, Ebrahim 21 Leep, David B. 21 Mao, Lixin 21 Parimala, Raman 21 Sivatski, Alexander S. 20 Moussavi, Ahmad 19 Alhevaz, Abdollah 19 Danchev, Peter Vassilev 18 Rizvi, Syed Tariq 17 Becher, Karim Johannes 17 Craven, Thomas C. 17 Elman, Richard S. 17 Mináč, Ján 17 Paykan, Kamal 16 Jain, Surender Kumar 16 Marshall, Murray Angus 15 Chapman, Adam 15 Hazrat, Roozbeh 15 Pumplün, Susanne 15 Wadsworth, Adrian R. 15 Zeng, Guangxing 14 Akbari, Saieed 14 Kim, Nam Kyun 14 Koşan, Muhammet Tamer 14 Lewis, David W. 14 Matczuk, Jerzy 14 Mazurek, Ryszard 14 Scheiderer, Claus 14 Siles Molina, Mercedes 14 Srivastava, Ashish Kumar 14 Ziembowski, Michał 13 Behboodi, Mahmood 13 Colliot-Thélène, Jean-Louis 13 Ding, Nanqing 13 Hoffmann, Detlev W. 13 Klep, Igor 13 Lee, Yang 13 Rangaswamy, Kulumani M. 13 Rao, Ravi A. 13 Ware, Roger 12 Facchini, Alberto 12 Jacob, Bill 12 Park, Jae Keol 12 Shapiro, Daniel Byron 12 Yousif, Mohamed F. 11 Arason, Jón Kristinn 11 Nashier, Budh Singh 11 Sabadini, Irene 11 Vaš, Lia 10 Chen, Jianlong 10 Fitzgerald, Robert W. 10 Hong, Chan Yong 10 Laghribi, Ahmed 10 Leung, Ka Hin 10 López-Permouth, Sergio Roberto 10 Mahdavi-Hezavehi, M. 10 Nam, Tran Giang 10 Sheibani Abdolyousefi, Marjan 10 Tuganbaev, Askar Akanovich 10 Unger, Thomas P. 9 Colombo, Fabrizio 9 Diesl, Alexander J. 9 Huynh, Dinh Van 9 Marks, Greg 9 Nazemian, Zahra 9 Okniński, Jan 9 Reyes, Manuel L. 9 Reznick, Bruce 9 Tercan, Adnan 9 Werner, Nicholas J. 9 Yengui, Ihsen 8 Alahmadi, Adel N. 8 Bolotnikov, Vladimir 8 Büyükasik, Engin 8 Camillo, Victor P. 8 Chernousov, Vladimir I. 8 Elduque, Alberto 8 Gentili, Graziano 8 Gluesing-Luerssen, Heide 8 Ibrahim, Yasser F. 8 Kadison, Lars 8 Keskin Tutuncu, Derya 8 Kiani, Dariush 8 Koprowski, Przemysław 8 Lee, Tsiu-Kwen 8 Lombardi, Henri 8 Merkur’ev, Aleksandr Sergeevich 8 Moradzadeh-Dehkordi, Ali 8 Nicholson, W. Keith 8 Quadrat, Alban 8 Quéguiner-Mathieu, Anne 8 Van Geel, Jan ...and 2,649 more Authors all top 5 Cited in 352 Serials 495 Journal of Algebra 299 Communications in Algebra 223 Journal of Pure and Applied Algebra 136 Journal of Algebra and its Applications 101 Linear Algebra and its Applications 79 Proceedings of the American Mathematical Society 75 Transactions of the American Mathematical Society 69 Mathematische Zeitschrift 44 Israel Journal of Mathematics 43 Advances in Mathematics 38 Manuscripta Mathematica 35 Journal of Number Theory 35 Mathematische Annalen 33 Archiv der Mathematik 30 Inventiones Mathematicae 30 Algebras and Representation Theory 24 Linear and Multilinear Algebra 20 Rocky Mountain Journal of Mathematics 19 Designs, Codes and Cryptography 18 Glasgow Mathematical Journal 18 Journal of Symbolic Computation 18 Indagationes Mathematicae. 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Series A 6 International Journal of Algebra and Computation 6 The Journal of Geometric Analysis 6 Applied Categorical Structures 6 Bulletin of the American Mathematical Society 6 International Electronic Journal of Algebra (IEJA) 5 American Mathematical Monthly 5 Mathematical Proceedings of the Cambridge Philosophical Society 5 Beiträge zur Algebra und Geometrie 5 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg 5 Automatica 5 Czechoslovak Mathematical Journal 5 Memoirs of the American Mathematical Society 5 Theoretical Computer Science 5 European Journal of Combinatorics 5 Bulletin of the Iranian Mathematical Society 5 Discrete & Computational Geometry 5 SIAM Journal on Optimization 5 Documenta Mathematica 5 Journal of Commutative Algebra 4 Discrete Applied Mathematics 4 Indian Journal of Pure & Applied Mathematics 4 International Journal of Theoretical Physics 4 Mathematics of Computation 4 Journal of Geometry and Physics 4 Acta Mathematica Vietnamica 4 Algebra and Logic 4 Annali di Matematica Pura ed Applicata. Serie Quarta 4 Geometriae Dedicata 4 Journal of the Korean Mathematical Society 4 Le Matematiche 4 Rendiconti del Seminario Matematico della Università di Padova ...and 252 more Serials all top 5 Cited in 58 Fields 1,340 Associative rings and algebras (16-XX) 723 Number theory (11-XX) 498 Commutative algebra (13-XX) 409 Field theory and polynomials (12-XX) 370 Group theory and generalizations (20-XX) 335 Algebraic geometry (14-XX) 287 Linear and multilinear algebra; matrix theory (15-XX) 172 \(K\)-theory (19-XX) 150 Combinatorics (05-XX) 148 Category theory; homological algebra (18-XX) 144 Nonassociative rings and algebras (17-XX) 81 Order, lattices, ordered algebraic structures (06-XX) 63 Functional analysis (46-XX) 62 Information and communication theory, circuits (94-XX) 58 Algebraic topology (55-XX) 53 Systems theory; control (93-XX) 49 Computer science (68-XX) 49 Operations research, mathematical programming (90-XX) 42 Functions of a complex variable (30-XX) 41 Mathematical logic and foundations (03-XX) 40 Manifolds and cell complexes (57-XX) 39 Topological groups, Lie groups (22-XX) 38 Geometry (51-XX) 37 Operator theory (47-XX) 35 Numerical analysis (65-XX) 34 Quantum theory (81-XX) 27 General topology (54-XX) 26 Several complex variables and analytic spaces (32-XX) 24 Convex and discrete geometry (52-XX) 18 Special functions (33-XX) 18 Harmonic analysis on Euclidean spaces (42-XX) 18 Differential geometry (53-XX) 16 Partial differential equations (35-XX) 15 Abstract harmonic analysis (43-XX) 14 Real functions (26-XX) 14 Dynamical systems and ergodic theory (37-XX) 11 Global analysis, analysis on manifolds (58-XX) 10 Approximations and expansions (41-XX) 9 Ordinary differential equations (34-XX) 8 History and biography (01-XX) 8 General algebraic systems (08-XX) 7 Difference and functional equations (39-XX) 7 Integral transforms, operational calculus (44-XX) 6 General and overarching topics; collections (00-XX) 5 Relativity and gravitational theory (83-XX) 4 Measure and integration (28-XX) 4 Probability theory and stochastic processes (60-XX) 4 Mechanics of deformable solids (74-XX) 4 Statistical mechanics, structure of matter (82-XX) 2 Potential theory (31-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 2 Statistics (62-XX) 2 Mechanics of particles and systems (70-XX) 2 Fluid mechanics (76-XX) 2 Biology and other natural sciences (92-XX) 1 Optics, electromagnetic theory (78-XX) 1 Geophysics (86-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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