Volume 39, (1991)

Research Article

Duality for a class of nondifferentiable multi-objective programs

Mond, B.; Husain, I.; Durga Prasad, M. V.

Util. Math. 39, 3-19 (1991).

Research Article

Direct numerical methods for second order Fredholm integro-differential equations

Garey, L. E.; Gladwin, C. J.; Shaw, R. E.

Util. Math. 39, 21-31 (1991).

Research Article

A class of optimally embedded resolution III designs

Raghavarao, D.; Anderson, D. A.; Pesotan, H.

Util. Math. 39, 33-39 (1991).

Research Article

Multiple objective programming duality without a constraint qualification

Weir, T.; Mond, B.

Util. Math. 39, 41-55 (1991).

Research Article

Complete sets of mutually orthogonal F-squares of composite order 2kt with two and 2k−1 symbols

Mandeli, John P.

Util. Math. 39, 57-63 (1991).

Research Article

The number of solutions of a certain congruence involving the sum of like powers

Lehmer, D. H.

Util. Math. 39, 65-89 (1991).

Research Article

Local Lipschitz constant for nonlinear approximation

Dunham, C. B.

Util. Math. 39, 91-96 (1991).

Research Article

Existence results for some singular higher order boundary value problems

O’Regan, Donal

Util. Math. 39, 97-117 (1991).

Research Article

Some sextuple coverings with normal points

Stanton, R. G.; Stone, D. M. F.; Ruet d’Auteuil, E. A.

Util. Math. 39, 119-128 (1991).

Research Article

Sets of mutually orthogonal row-column designs containing designs for comparing test treatments with controls

Mandeli, John P.

Util. Math. 39, 129-144 (1991).

Research Article

The irredundant Ramsey number s(3,7)

Cockayne, E. J.; Hattingh, J. H.; Mynhardt, C. M.

Util. Math. 39, 145-160 (1991).

Research Article

Group divisible designs with 2a points

Arasu, K. T.; Pott, Alexander

Util. Math. 39, 161-166 (1991).

Research Article

Existence and uniqueness theorems for nonlinear difference boundary value problems

Cheng, S. S.; Lin, S. S.

Util. Math. 39, 167-186 (1991).

Research Article

A construction of balanced ternary designs based on SBIBDs

Francel, Margaret Ann; Sarvate, Dinesh G.

Util. Math. 39, 187-189 (1991).

Research Article

Groupe des unités de certains corps de degré 4 et de degré 8 sur Q. (Unit groups of certain fields of degree 4 and degree 8 over Q)

Levesque, Claude

Util. Math. 39, 191-209 (1991).

Research Article

Two more covering designs with block size 5 and index 4

Assaf, Ahmed M.

Util. Math. 39, 210-214 (1991).

Research Article

Oscillations in certain difference equations

Philos, Ch. G.

Util. Math. 39, 215-218 (1991).

Research Article

A new proof of the equivalence of almost sure stability and 1-complete stability

Zhang, Hanqin; Wang, Rongxin

Util. Math. 39, 219-224 (1991).

Research Article

Local invariant functions for representations of SO(n) and Gl(n,R)

Prélat, Daniel

Util. Math. 39, 225-248 (1991).

Research Article

Note on construction of variance balanced designs through group divisible designs

Ghosh, D. K.; Joshi, Kamlesh

Util. Math. 39, 249-253 (1991).

E-mail Alert

Add your e-mail address to receive upcoming issues of Utilitas Mathematica

Call for papers

Special issue: Dynamical systems and differential equations in applied sciences
Guest editors: Renhai Wang, Mirelson Martins Freitas, Nguyen Huy Tuan
Submission deadline: 03 January 2026

Special Issues

The Combinatorial Press Editorial Office routinely extends invitations to scholars for the guest editing of Special Issues, focusing on topics of interest to the scientific community.