| Completely positive linear maps on complex matrices MD Choi Linear Algebra Appl. 10, 285-290, 1975 | 1949 | 1975 |
| Injectivity and operator spaces MD Choi, EG Effros Journal of functional analysis 24 (2), 156-209, 1977 | 490 | 1977 |
| A Schwarz inequality for positive linear maps on C*-algebras MD Choi Illinois J. Math. 18, 565-574, 1974 | 421 | 1974 |
| Sums of squares of real polynomials MD Choi, TY Lam, B Reznick Proceedings of Symposia in Pure mathematics 58, 103-126, 1995 | 372 | 1995 |
| The completely positive lifting problem for C*-algebras MD Choi, EG Effros Annals of Mathematics, 585-609, 1976 | 311 | 1976 |
| Positive linear maps on C*-algebras MD Choi Canadian J, Math. 24 (3), 520-529, 1072 | 285* | 1072 |
| Positive semidefinite biquadratic forms MD Choi Linear Algebra and its Applications 12 (2), 95-100, 1975 | 238 | 1975 |
| Extremal positive semidefinite forms MD Choi, TY Lam Mathematische Annalen 231 (1), 1-18, 1977 | 179 | 1977 |
| Nuclear C*-algebras and the approximation property MD Choi, EG Effros American Journal of Mathematics 100 (1), 61-79, 1978 | 175 | 1978 |
| Tricks or treats with the Hilbert matrix MD Choi The American Mathematical Monthly 90 (5), 301-312, 1983 | 165 | 1983 |
| Gauss polynomials and the rotation algebra MD Choi, GA Elliott, N Yui Inventiones mathematicae 99 (1), 225-246, 1990 | 154 | 1990 |
| Some assorted inequalities for positive linear maps on C*-algebras MD Choi Journal of Operator Theory, 271-285, 1980 | 150 | 1980 |
| The full C∗-algebra of the free group on two generators MD Choi Pacific Journal of Mathematics 87 (1), 41-48, 1980 | 142 | 1980 |
| Nuclear C*-algebras and injectivity: the general case MD Choi, EG Effros Indiana University Mathematics Journal 26 (3), 443-446, 1977 | 137 | 1977 |
| Positive linear-maps MD Choi Proceedings of Symposia in Pure Mathematics 38, 583-590, 1982 | 127 | 1982 |
| A Simple C*-Algebra Generated by Two Finite-Order Unitaries MD Choi Canadian Journal of Mathematics 31 (4), 867-880, 1979 | 122 | 1979 |
| Linear maps preserving commutativity MD Choi, AA Jafarian, H Radjavi Linear Algebra and its Applications 87, 227-241, 1987 | 114 | 1987 |
| Geometry of higher-rank numerical ranges MD Choi, M Giesinger, JA Holbrook, DW Kribs Linear and Multilinear Algebra 56 (1-2), 53-64, 2008 | 93 | 2008 |
| The Pythagoras number of some affine algebras and local algebras MD Choi, ZD Dai, TY Lam, B Reznick J. reine angew. Math 336, 45-82, 1982 | 85 | 1982 |
| Higher-rank numerical ranges and compression problems MD Choi, DW Kribs, K Życzkowski Linear algebra and its applications 418 (2-3), 828-839, 2006 | 84 | 2006 |
Bruce ReznickProfessor of Mathematics, University of IllinoisVerified email at math.uiuc.edu