Volume 40, (1991)

Research Article

Formulas for counting chains in multisets

Chou, Wun-Seng

Util. Math. 40, 3-12 (1991).

Research Article

Approximate solution for pulsatile flow in tubes of slightly noncircular cross-sections

Duan, B.; Zamir, M.

Util. Math. 40, 13-25 (1991).

Research Article

An efficient method for the determination of certain real quadratic fields of class number one

Mollin, R. A.

Util. Math. 40, 27-32 (1991).

Research Article

On the convergence of an Anderson-Darling statistic based on normalized spacings

Aly, Emad-Eldin A. A.

Util. Math. 40, 33-39 (1991).

Research Article

Can stability in food chain models be preserved as time delays increase?

Freedman, H. I.; Kumar, Ravinder

Util. Math. 40, 41-50 (1991).

Research Article

Applications of the modified Leverrier-Faddeev algorithm for the construction of explicit matrix spectral decompositions and inverses

Gower, J. C.; Groenen, P. J. F.

Util. Math. 40, 51-64 (1991).

Research Article

The cardioid and a variation of the brachistochrone problem

Hoskins, J. A.; Hoskins, W. D.; Stanton, R. G.

Util. Math. 40, 65-70 (1991).

Research Article

Upper semicontinuity of local strong unicity constant (function) in nonlinear locally best Chebyshev approximation

Zhu, Changzhong; Dunham, Charles B.

Util. Math. 40, 71-75 (1991).

Research Article

Foundations of intersection graph theory

McKee, Terry A.

Util. Math. 40, 77-86 (1991).

Research Article

Complete sets of frequency squares with subsquares

Laywine, C. F.

Util. Math. 40, 87-95 (1991).

Research Article

On the construction of snake in the box codes

Abbott, H. L.; Katchalski, M.

Util. Math. 40, 97-116 (1991).

Research Article

A nonsmooth version of alternative theorem and nonsmooth multiobjective programming

Craven, B. D.; Yang, X. Q.

Util. Math. 40, 117-128 (1991).

Research Article

Disjoint packings on 6k+5 points

Chen, D.; Stanton, R. G.; Stinson, D. R.

Util. Math. 40, 129-138 (1991).

Research Article

Thermocapillary convection in cylindrical fluid regions

Davis, A. M. J.

Util. Math. 40, 139-154 (1991).

Research Article

Nonlinear Chebyshev approximation with varying functions, domains and constraints

Zhu, Changzhong; Dunham, Charles B.

Util. Math. 40, 155-159 (1991).

Research Article

Sequential estimation of scale parameter in exponential distributions with unknown location

Govindarajulu, Z.; Sarkar, Subodh C.

Util. Math. 40, 161-178 (1991).

Research Article

Amicable Hadamard matrices and amicable orthogonal designs

Seberry, Jennifer; Yamada, Mieko

Util. Math. 40, 179-192 (1991).

Research Article

A lower bound for number of treatments in a main effect plus one plan for 27 factorials

Gupta, B. C.

Util. Math. 40, 193-217 (1991).

Research Article

Some general considerations on packings

Stanton, R. G.

Util. Math. 40, 219-229 (1991).

Research Article

Absolute Nörlund summability factors

Bor, Hüseyin

Util. Math. 40, 231-236 (1991).

Research Article

Direct quadrature methods for nonlinear Volterra integro-differential equations with infinite delay

Brunner, Hermann

Util. Math. 40, 237-250 (1991).

Research Article

A note on uniformly dense matroids

Lai, Hong-Jian; Lai, Hongyuan

Util. Math. 40, 251-256 (1991).

Research Article

On comparison of ternary efficiency balanced and ternary variance balanced designs

Ghosh, D. K.; Divecha, Jyoti; Karmoker, P. K.

Util. Math. 40, 257-271 (1991).

Research Article

On incomplete transversal designs with block size five

Du, B.

Util. Math. 40, 272-282 (1991).

Research Article

Construction of some families of group divisible designs

Dey, A.; Balasubramanian, K.

Util. Math. 40, 283-290 (1991).

Research Article

Partially balanced incomplete block designs with nested rows and columns

Gupta, Sudhir; Singh, Murari

Util. Math. 40, 291-302 (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.