arXiv subjects

Predrag S. Stanimirovic

Publications and source records attributed to Predrag S. Stanimirovic.

5 recordsLinked to original sources

arXiv2026

Perturbation analysis of tensor $(\mathcal{B},\mathcal{C})$-inverse via Einstein product

We investigate the influence of a relatively small perturbation on various generalized inverses functions or quantities derived from a tensor $\mathcal{A}$.When a small tensor perturbation $\mathcal{E}$ is introduced, it becomes challenging to analyze generalized inverses of the perturbed tensor $ \mathcal{D} =\mathcal{A}+\mathcal{E}$ and to determine how this perturbation affects a generalized inverse of $\mathcal{A}$.Our main goal is to understand the relationship between $\mathcal{D}^\Game$ and $ \mathcal{A}^\Game $, where $(\cdot)^\Game$ denotes a specific generalized inverse or a class of generalized inverses.In particular, classes of tensor inner, outer, and $(\mathcal{B},\mathcal{C})$ inverses are considered.

math.FA↗

arXiv2023

Computing Tensor Generalized bilateral inverses

We introduce tensor generalized bilateral inverses (TGBIs) under the Einstein tensor product as an extension of generalized bilateral inverses (GBIs) in the matrix environment. Moreover, the TBGI class includes so far considered composite generalized inverses (CGIs) for matrices and tensors. Applications of TBGIs for solving multilinear systems are presented. The characterizations and representations of TGBI were studied and verified using a specific algebraic approach. Further, a few characterizations of known CGIs (such as CMP, DMP, MPD, MPCEP, and CEPMP) are derived. The main properties of the TGBIs ware exploited and verified through numerical examples.

math.NA↗

arXiv2019

Core and Core-EP Inverses of Tensors

Specific definitions of the core and core-EP inverses of complex tensors are introduced. Some characterizations, representations and properties of the core and core-EP inverses are investigated. The results are verified using specific algebraic approach, based on proposed definitions and previously verified properties. The approach used here is new even in the matrix case.

math.NA↗

arXiv2018

Model-Free Optimization Using Eagle Perching Optimizer

The paper proposes a novel nature-inspired technique of optimization. It mimics the perching nature of eagles and uses mathematical formulations to introduce a new addition to metaheuristic algorithms. The nature of the proposed algorithm is based on exploration and exploitation. The proposed algorithm is developed into two versions with some modifications. In the first phase, it undergoes a rigorous analysis to find out their performance. In the second phase it is benchmarked using ten functions of two categories; uni-modal functions and multi-modal functions. In the third phase, we conducted a detailed analysis of the algorithm by exploiting its controlling units or variables. In the fourth and last phase, we consider real world optimization problems with constraints. Both versions of the algorithm show an appreciable performance, but analysis puts more weight to the modified version. The competitive analysis shows that the proposed algorithm outperforms the other tested metaheuristic algorithms. The proposed method has better robustness and computational efficiency.

cs.NE↗

arXiv2011

Single-facility Weber Location Problem based on the Lift Metric

The continuous single-facility min-sum Weber location problem based upon the lift metric is investigated. An effective algorithm is developed for its solution. Implementation for both the discrete and continuous location problems is developed in the programming package Mathematica.

math.OC↗