This article proposes a general gH-gradient efficient-direction method and $${\mathcal{W}}$$ -gH-gradient efficient for the optimization problems with interval-valued functions. The convergence analysis step-wise algorithms of both methods are presented. It is observed that converges linearly strongly convex objective function. To develop proposed to study their convergence, ideas strong convex...

The Hukuhara-Levelt-Turrittin decomposition theorem gives a classification of differential modules over the field C((z)) of formal Laurent series resembling the decomposition of a finite-dimensional vector space equipped with a linear endomorphism into generalized eigenspaces. It implies that after adjoining a suitable root of z, one can express any differential module as a successive extension...