Mathematics

On k-quasihyponormal operators

Mathematica Japonica, 23, 185–189.

Singular perturbation of autonomous linear systems III

Houston Journal of Mathematics, 44, 527–539.

Secondary bifurcation for one-parameter families of bifurcation problems

(Report No. 97). Colchester, England: University of Essex.

Bifurcation in the neighbourhood of a non-isolated singular point

Israel Journal of Mathematics, 30(4), 363–381.

On word classification using a neural network

(Pattern Analysis Report No. 43; Vol. 2; By U. Grenander). Providence, Rhode Island: Division of Applied Mathematics, Brown University.

Reply to Grossberg.

Psychological Review, 85(6), 597–603.

Linear operators for which T∗T and T + T∗ commute. III

Pacific Journal of Mathematics, 76(1), 17–19.

On the null spaces of linear Fredholm operators depending on several parameters

Mathematical Proceedings of the Cambridge Philosophical Society, 84(1), 131–142.

On the limit of a product of matrix exponentials

Linear and Multilinear Algebra, 6(1), 55–59.

Optimal control of discrete linear processes with quadratic cost

International Journal of Systems Science, 9(8), 841–847.

Public key cryptosystems: an elementary overview

In Confidentiality in Surveys (Report No. 29). Stockholm, Sweden: Department of Statistics, University of Stockholm.

Analytic continuation of an operator‐valued H‐function with applications to neutron transport theory

Journal of Mathematical Physics, 19(2), 494–499.

Solution by iteration of H‐equations in multigroup neutron transport

Journal of Mathematical Physics, 19(2), 500–501.

Singular perturbation of autonomous linear systems, II

Journal of Differential Equations, 29(3), 362–373.

Weak Drazin inverses

Linear Algebra and Its Applications, 20(2), 167–178.