... 2026 © Emerald Publishing Limited 2026 Emerald Publishing Limited Licensed re-use rights only Uncertain optimization Interval analysis Artificial bee colony algorithm Possibility degree of interval Non-uniform distribution In general, in nonlinear mathematical programming...

... A is non-zero), whereas if ∃ A ∈ A^I such that A is singular, then the interval matrix A^I is singular. Interval analysis Damped structure Generalized interval eigenvalue Nonlinear eigenvalue Polynomial eigenvalue Sufficient regularity...

... the uncertain time-dependent external loads is presented by combining the inverse system method in modern control theory and interval analysis in interval mathematics. Inspired by the concept of set membership identification in control theory, an interval analysis model of external loads time history, which...

... perturbation method is proposed, that gives the exact extrema of the first-order deviation of the structural eigenvalue. The fuzzy eigenvalue approach has also been improved by reusing the interval analysis results from previous α-cuts. Findings – The proposed method was demonstrated on a simple...