J. William Helton

43 papers Journal 30Unranked 12
YearRankTypeTitle / Venue / Authors
2026 J jnl
Uniform convergence of an asymptotic approximation to associated Stirling numbers.
Contributions Discret. Math.
E. Rodney Canfield, Jared Hughes, J. William Helton
2025 J jnl
Quantum precomputation: parallelizing cascade circuits and the Moore-Nilsson conjecture is false.
CoRR
Adam Bene Watts, Charles R. Chen, J. William Helton, Joseph Slote
2024 J jnl
Matrix extreme points and free extreme points of free spectrahedra.
Optim. Methods Softw.
Aidan Epperly, Eric Evert, J. William Helton, Igor Klep
2024 J jnl
Relaxations and Exact Solutions to Quantum Max Cut via the Algebraic Structure of Swap Operators.
Quantum
Adam Bene Watts, Anirban Chowdhury, Aidan Epperly, J. William Helton, Igor Klep
2023 J jnl
Empirical Properties of Optima in Free Semidefinite Programs.
Exp. Math.
Eric Evert, Yi Fu, J. William Helton, John Yin
2021 J jnl
Noncommutative Polynomials Describing Convex Sets.
Found. Comput. Math.
J. William Helton, Igor Klep, Scott A. McCullough, Jurij Volcic
2020 J jnl
3XOR Games with Perfect Commuting Operator Strategies Have Perfect Tensor Product Strategies and are Decidable in Polynomial Time.
CoRR
Adam Bene Watts, J. William Helton
2013 J jnl
Non-Commutative Representations of families of K
Int. J. Algebra Comput.
Harry Dym, J. William Helton, Caleb Meier
2013 J jnl
The matricial relaxation of a linear matrix inequality.
Math. Program.
J. William Helton, Igor Klep, Scott A. McCullough
2012 J jnl
A Semidefinite Approach for Truncated K-Moment Problems.
Found. Comput. Math.
J. William Helton, Jiawang Nie
2010 J jnl
Conditions for stabilization of the tokamak plasma vertical instability using only a massless plasma analysis.
Autom.
J. William Helton, Kevin J. McGown, Michael L. Walker
2010 — conf
Relaxing LMI domination matricially.
CDC
J. William Helton, Igor Klep, Scott A. McCullough
2010 J jnl
Semidefinite representation of convex sets.
Math. Program.
J. William Helton, Jiawang Nie
2010 — conf
Solvability of linear matrix equations in a symmetric matrix variable.
CDC
Maurício C. de Oliveira, J. William Helton
2009 J jnl
Convex Matrix Inequalities Versus Linear Matrix Inequalities.
IEEE Trans. Autom. Control.
J. William Helton, Scott A. McCullough, Mihai Putinar, Victor Vinnikov
2009 J jnl
Determinant Expansions of Signed Matrices and of Certain Jacobians.
SIAM J. Matrix Anal. Appl.
J. William Helton, Igor Klep, Raul Gomez
2009 J jnl
Sufficient and Necessary Conditions for Semidefinite Representability of Convex Hulls and Sets.
SIAM J. Optim.
J. William Helton, Jiawang Nie
2008 — conf
Conditions for a massless plasma analysis to predict stabilization of the tokamak plasma vertical instability.
CDC
J. William Helton, Kevin J. McGown, Michael L. Walker
2008 — conf
Structured semidefinite representation of some convex sets.
CDC
J. William Helton, Jiawang Nie
2006 — conf
A Symbolic Procedure for Computing Semidefinite Program Duals.
CDC
Maurício C. de Oliveira, J. William Helton
2006 J jnl
Solving Matrix Inequalities whose Unknowns are Matrices.
SIAM J. Optim.
Juan F. Camino, J. William Helton, Robert E. Skelton
2005 J jnl
Reduced-complexity nonlinear H
IEEE Trans. Autom. Control.
J. William Helton, Matthew R. James, William M. McEneaney
2004 J jnl
Convex Noncommutative Polynomials Have Degree Two or Less.
SIAM J. Matrix Anal. Appl.
J. William Helton, Scott A. McCullough
2004 — conf
Solving matrix inequalities whose unknowns are matrices.
CDC
Juan F. Camino, J. William Helton, Robert E. Skelton
2003 J jnl
Asymptotics of Permutations with Nearly Periodic Patterns of Rises and Falls.
Electron. J. Comb.
Edward A. Bender, J. William Helton, L. Bruce Richmond
2003 — conf
Computer algebra tailored to matrix inequalities in control.
CDC
J. William Helton, Maurício C. de Oliveira
2003 J jnl
Global Uniqueness Tests and Performance Bounds for H
SIAM J. Control. Optim.
J. William Helton, Marshall A. Whittlesey
2003 — ch.
Manipulating Matrix Inequalities Automatically.
Mathematical Systems Theory in Biology, Communications, Computation, and Finance
J. William Helton
2001 — conf
An introduction to the mechanics of tensegrity structures.
CDC
Robert E. Skelton, Rajesh Adhikari, Jean Paul Pinaud, Waileung Chan, J. William Helton
2001 — conf
Nonlinear H
CDC
J. William Helton, Matthew R. James, William M. McEneaney
2001 J jnl
Some adaptive control problems which convert to a "classical" problem in several complex variables.
IEEE Trans. Autom. Control.
J. William Helton
2000 — conf
A symbolic algorithm for determining convexity of a matrix function: how to get Schur complements out of your life.
CDC
Juan F. Camino, J. William Helton, Robert E. Skelton
2000 — conf
Global uniqueness tests for H
CDC
J. William Helton, Marshall A. Whittlesey
2000 J jnl
Numerical solution of nonlinear 𝒽
IEEE Trans. Control. Syst. Technol.
Michael Hardt, J. William Helton, Kenneth Kreutz-Delgado
1998 J jnl
Computer simplification of formulas in linear systems theory.
IEEE Trans. Autom. Control.
J. William Helton, Mark Stankus, John J. Wavrik
1998 J jnl
Dissipative control systems synthesis with full state feedback.
Math. Control. Signals Syst.
S. Yuliar, Matthew R. James, J. William Helton
1994 J jnl
Application of signal subspace algorithms to scattered geometric optics and edge-diffracted signals.
IEEE Trans. Signal Process.
Michael L. Walker, J. William Helton
1994 J jnl
Sparsity Patterns with High Rank Extremal Positive Semidefinite Matrices.
SIAM J. Matrix Anal. Appl.
J. William Helton, Daniel Lam, Hugo J. Woerdeman
1993 J jnl
H
IEEE Trans. Autom. Control.
Joseph A. Ball, J. William Helton, Michael L. Walker
1992 J jnl
Nonlinear
Math. Control. Signals Syst.
Joseph A. Ball, J. William Helton
1988 J jnl
Correction: Vandermonde and Resultant Matrices: An Abstract Approach.
Math. Syst. Theory
J. William Helton, Leiba Rodman
1987 J jnl
Vandermonde and Resultant Matrices: An Abstract Approach.
Math. Syst. Theory
J. William Helton, Leiba Rodman
1974 — conf
Scattering theory and non linear systems.
Category Theory Applied to Computation and Control
F. Joanne Helton, J. William Helton