Optimum Approximation for ς–Lie Homomorphisms and Jordan ς–Lie Homomorphisms in ς–Lie Algebras by Aggregation Control Functions
Abstract
:1. Introduction
- We present the definition of -LA and we introduce the matrix valued fuzzy normed space and the matrix valued fuzzy controllers.
- We apply Radu–Mihet method derived from the alternative fixed point theorem to study the H–U–R stability of homomorphisms and Jordan homomorphisms on -LMVFBA.
2. Preliminaries
- (i)
- Boundary conditions and , and .
- (ii)
- The function is monotonically non-decreasing in each component, i.e., for all ,
- (1)
- The arithmetic mean function , defined by
- (2)
- The geometric mean function , defined by
- (3)
- For any , the projection function and the order statistic function associated with the kth argument, are respectively defined by , where is the kth lowest coordinate of x, that is, . The projections onto the first and the last coordinates are defined as . Similarly, the extreme order statistics and are respectively the minimum and maximum functions
- (4)
- The median of an odd number of values is simply defined byFor an even number of values , the median is defined by
- if and only if
- denotes that and ; for every .
- Define in where . Note that, and .
- (1)
- (neutral element);
- (2)
- (commutativity);
- (3)
- (associativity);
- (4)
- (monotonicity).
- (5)
- If for every and each sequences and converging to and we get
- (i)
- Define , such that,
- (ii)
- Define , such that,
- (iii)
- Define , such that,
- It is a left as a continuous and increasing function.
- for any and .
- For MVFFs and , the relation “” defined as follows
- (1)
- if and only if and ;
- (2)
- for all and with ;
- (3)
- for all and any ;
- (4)
- for any .
- (i)
- ;
- (ii)
- the sequence is convergent to a fixed point of Ξ;
- (iii)
- is the unique fixed point of Ξ in the set ;
- (iv)
- .
3. H–U–R Stability of Homomorphisms on -LBA
- The sequence converges to a fixed point such as .
- The unique element is in the set and is the unique fixed point , it meansOn the other hand, according to the definition of the function and according to Lemma (1) for the function , we have for all .
- There exists a such that
- (i)
- We put in and use Lemma 1 and conclude that is additive.
- (ii)
- By considering in the last equality, we obtain .
- (iii)
- By using Lemma 2, we infer that the mapping is -linear.
4. H–U–R Stability of Jordan Homomorphisms on -LBA
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Eidinejad, Z.; Saadati, R.; Mesiar, R. Optimum Approximation for ς–Lie Homomorphisms and Jordan ς–Lie Homomorphisms in ς–Lie Algebras by Aggregation Control Functions. Mathematics 2022, 10, 1704. https://doi.org/10.3390/math10101704
Eidinejad Z, Saadati R, Mesiar R. Optimum Approximation for ς–Lie Homomorphisms and Jordan ς–Lie Homomorphisms in ς–Lie Algebras by Aggregation Control Functions. Mathematics. 2022; 10(10):1704. https://doi.org/10.3390/math10101704
Chicago/Turabian StyleEidinejad, Zahra, Reza Saadati, and Radko Mesiar. 2022. "Optimum Approximation for ς–Lie Homomorphisms and Jordan ς–Lie Homomorphisms in ς–Lie Algebras by Aggregation Control Functions" Mathematics 10, no. 10: 1704. https://doi.org/10.3390/math10101704