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Madjid Eshaghi
Semnan University

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Journal article
Published: 16 October 2020 in Mathematics
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In this article, we study the impact of teamwork on an organization’s performance, considering a cooperative game’s framework. To promote teamwork culture, performance indexes were considered both individually and collectively, and by comparing the scores that every employee earned individually and collectively, their differences became obvious. In this approach, a cooperative game’s model was used in order to improve the organization’s performance. The proposed model, in addition to evaluating the organization and employee’s activities, implemented all payments, including overtime pay, rewards, etc., fairly and along with increasing performance and satisfaction. The cooperative approach created effective communications between employees and authorities and enhanced their motivation for teamwork. Moreover, results could be used for decisions related to employees (such as promotion, transition, firing, and secondment), analysis of training requirements, employees’ development, and research and plan valuation. Our findings show that the collaborative coefficient (CC) is a key factor in increasing productivity and improving the efficiency of an organization in the long run. The collaborative coefficient is a new concept in teamwork that has rarely been considered in scientific research.

ACS Style

Gholamreza Askari; Nader Asghri; Madjid Eshaghi Gordji; Heshmatolah Asgari; José António Filipe; Adel Azar. The Impact of Teamwork on an Organization’s Performance: A Cooperative Game’s Approach. Mathematics 2020, 8, 1804 .

AMA Style

Gholamreza Askari, Nader Asghri, Madjid Eshaghi Gordji, Heshmatolah Asgari, José António Filipe, Adel Azar. The Impact of Teamwork on an Organization’s Performance: A Cooperative Game’s Approach. Mathematics. 2020; 8 (10):1804.

Chicago/Turabian Style

Gholamreza Askari; Nader Asghri; Madjid Eshaghi Gordji; Heshmatolah Asgari; José António Filipe; Adel Azar. 2020. "The Impact of Teamwork on an Organization’s Performance: A Cooperative Game’s Approach." Mathematics 8, no. 10: 1804.

Journal article
Published: 28 May 2020 in Statistics, Optimization & Information Computing
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In this paper, we provide an interpretation of the rationality in game theory in which player consider the profit or loss of the opponent in addition to personal profit at the game.‎ ‎‎The goal of a game analysis with two hyper-rationality players is to provide insight into real-world situations that are often more complex than a game with two rational players where the choices of strategy are only based on individual preferences. The hyper-rationality does not mean perfect rationality but an insight toward how human decision-makers behave in interactive decisions. ‎‎The findings of this research can help to enlarge our understanding of the psychological aspects of strategy choices in games and also provide an analysis of the decision-making process with cognitive economics approach at the same time.‎ ‎‎‎

ACS Style

Gholamreza Askari; Madjid Eshaghi Gordji. Decision Making: Rational Choice or Hyper-Rational Choice. Statistics, Optimization & Information Computing 2020, 8, 583 -589.

AMA Style

Gholamreza Askari, Madjid Eshaghi Gordji. Decision Making: Rational Choice or Hyper-Rational Choice. Statistics, Optimization & Information Computing. 2020; 8 (2):583-589.

Chicago/Turabian Style

Gholamreza Askari; Madjid Eshaghi Gordji. 2020. "Decision Making: Rational Choice or Hyper-Rational Choice." Statistics, Optimization & Information Computing 8, no. 2: 583-589.

Journal article
Published: 28 May 2019 in Palgrave Communications
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The rational choice theory is based on this idea that people rationally pursue goals for increasing their personal interests. Here, we present a new concept of rational choice as a hyper-rational choice in which the actor thinks about profit or loss of other actors in addition to his personal profit or loss and then will choose an action that is desirable to him. We implement the hyper-rational choice to generalize and expand the game theory. Results of this study will help to model the behavior of people considering environmental conditions, the type of behavioral interaction, valuation system of itself and others, and system of beliefs and internal values of societies. Hyper-rationality helps us understand how human decision-makers behave in interactive decisions.

ACS Style

Gholamreza Askari; Madjid Eshaghi Gordji; Choonkil Park. The behavioral model and game theory. Palgrave Communications 2019, 5, 57 .

AMA Style

Gholamreza Askari, Madjid Eshaghi Gordji, Choonkil Park. The behavioral model and game theory. Palgrave Communications. 2019; 5 (1):57.

Chicago/Turabian Style

Gholamreza Askari; Madjid Eshaghi Gordji; Choonkil Park. 2019. "The behavioral model and game theory." Palgrave Communications 5, no. 1: 57.

Preprint
Published: 12 May 2019
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In this study, considering the importance of how to exploit renewable natural resources, we analyze a fishing model with nonlinear harvesting function in which the players at the equilibrium point do a static game with complete information that, according to the calculations, will cause a waste of energy for both players and so the selection of cooperative strategies along with the agreement between the players is the result of this research.

ACS Style

Elahe Sorouri; Madjid Eshaghi Gordji; Reza. Memarbashi. An Analysis of a Fishing Model with Nonlinear Harvesting Function. 2019, 1 .

AMA Style

Elahe Sorouri, Madjid Eshaghi Gordji, Reza. Memarbashi. An Analysis of a Fishing Model with Nonlinear Harvesting Function. . 2019; ():1.

Chicago/Turabian Style

Elahe Sorouri; Madjid Eshaghi Gordji; Reza. Memarbashi. 2019. "An Analysis of a Fishing Model with Nonlinear Harvesting Function." , no. : 1.

Journal article
Published: 22 April 2019 in Journal of Neurodevelopmental Cognition
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In this article, we show how human decision-makers behave in interactive decisions. We interpret the players’ behavior with the help of the concept of hyper-rationality. These interpretations help to enlarge our understanding of the psychological aspects of strategy choices in games. With the help of this concept can be analyzed social sciences and society based on the cognitive psychology approach such that human society can be understood easily and predicted more fluently. In addition, we introduce a new game in which there is a dilemma that this dilemma occurs in most societies. We investigate this dilemma based on the claim that each player is hyper-rational. In this dilemma, a weak trust has been created between players, but it is fragile. In many cases, our study provides a framework to move towards cooperation between human decision-makers.

ACS Style

Madjid Eshaghi Gordji; Gholamreza Askari; Choonkil Park. A new behavioral model of rational choice in social dilemma game. Journal of Neurodevelopmental Cognition 2019, 1, 42 -50.

AMA Style

Madjid Eshaghi Gordji, Gholamreza Askari, Choonkil Park. A new behavioral model of rational choice in social dilemma game. Journal of Neurodevelopmental Cognition. 2019; 1 (1):42-50.

Chicago/Turabian Style

Madjid Eshaghi Gordji; Gholamreza Askari; Choonkil Park. 2019. "A new behavioral model of rational choice in social dilemma game." Journal of Neurodevelopmental Cognition 1, no. 1: 42-50.

Preprint
Published: 14 August 2018
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By studying game theory, we find that the Nash equilibrium does not exist in some games or, if there is in one, does not describe a real event. Here we show that the matching pennies game with pure strategy has the solution, but this solution is a game that happens simultaneously with this game. Using this solution, we will answer the Brookings Institution's question of boycotting the elections whether the opposition's boycott of elections is, in different circumstances, a defeated strategy. A strategy that its result in most cases is a failure or political suicide and the least possible consequence by the opposition. The findings of this article show that in general, it can be concluded that the election boycott strategy is a dominated strategy, and most of the opposition groups that have used it have failed and they donated the playground to the ruling group.

ACS Style

Madjid Eshaghi Gordji; Gholamreza Askari; Hamed Abdi. Why Is a Boycott of the Elections a Bad Idea? 2018, 1 .

AMA Style

Madjid Eshaghi Gordji, Gholamreza Askari, Hamed Abdi. Why Is a Boycott of the Elections a Bad Idea? . 2018; ():1.

Chicago/Turabian Style

Madjid Eshaghi Gordji; Gholamreza Askari; Hamed Abdi. 2018. "Why Is a Boycott of the Elections a Bad Idea?" , no. : 1.

Journal article
Published: 17 October 2016 in Mathematica Bohemica
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ACS Style

Alireza Moazzen; Yoel-Je Cho; Choonkil Park; Madjid Eshaghi Gordji. Some fixed point theorems in logarithmic convex structures. Mathematica Bohemica 2016, 1 -7.

AMA Style

Alireza Moazzen, Yoel-Je Cho, Choonkil Park, Madjid Eshaghi Gordji. Some fixed point theorems in logarithmic convex structures. Mathematica Bohemica. 2016; ():1-7.

Chicago/Turabian Style

Alireza Moazzen; Yoel-Je Cho; Choonkil Park; Madjid Eshaghi Gordji. 2016. "Some fixed point theorems in logarithmic convex structures." Mathematica Bohemica , no. : 1-7.

Journal article
Published: 17 October 2016 in Mathematica Bohemica
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ACS Style

Alireza Moazzen; Yoel-Je Cho; Choonkil Park; Madjid Eshaghi Gordji. Some fixed point theorems in logarithmic\newline convex structures. Mathematica Bohemica 2016, 142, 1 -7.

AMA Style

Alireza Moazzen, Yoel-Je Cho, Choonkil Park, Madjid Eshaghi Gordji. Some fixed point theorems in logarithmic\newline convex structures. Mathematica Bohemica. 2016; 142 (1):1-7.

Chicago/Turabian Style

Alireza Moazzen; Yoel-Je Cho; Choonkil Park; Madjid Eshaghi Gordji. 2016. "Some fixed point theorems in logarithmic\newline convex structures." Mathematica Bohemica 142, no. 1: 1-7.

Journal article
Published: 05 July 2016 in Journal of Fixed Point Theory and Applications
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In this paper, we prove some fixed point theorem on orthogonal spaces. Our result improve the main result of the paper by Eshaghi Gordji et al. [On orthogonal sets and Banach fixed point theorem, to appear in Fixed Point Theory]. Also we prove a statement which is equivalent to the axiom of choice. In the last section, as an application, we consider the existence and uniqueness of a solution for a Volterra-type integral equation in L p space.

ACS Style

Hamid Baghani; Madjid Eshaghi Gordji; Maryam Ramezani. Orthogonal sets: The axiom of choice and proof of a fixed point theorem. Journal of Fixed Point Theory and Applications 2016, 18, 465 -477.

AMA Style

Hamid Baghani, Madjid Eshaghi Gordji, Maryam Ramezani. Orthogonal sets: The axiom of choice and proof of a fixed point theorem. Journal of Fixed Point Theory and Applications. 2016; 18 (3):465-477.

Chicago/Turabian Style

Hamid Baghani; Madjid Eshaghi Gordji; Maryam Ramezani. 2016. "Orthogonal sets: The axiom of choice and proof of a fixed point theorem." Journal of Fixed Point Theory and Applications 18, no. 3: 465-477.

Journal article
Published: 14 November 2015 in Soft Computing
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In this paper, it is shown that the Hadamard integral inequality for r-convex functions is not satisfied in the fuzzy context. Using the classical Hadamard integral inequality, we give an upper bound for the Sugeno integral of r-convex functions. In addition, we generalize the results related to the Hadamard integral inequality for Sugeno integral from 1-convex functions (ordinary convex functions) to r-convex functions. We present a geometric interpretation and some examples in the framework of the Lebesgue measure to illustrate the results.

ACS Style

Sadegh Abbaszadeh; Madjid Eshaghi. A Hadamard-type inequality for fuzzy integrals based on r-convex functions. Soft Computing 2015, 20, 3117 -3124.

AMA Style

Sadegh Abbaszadeh, Madjid Eshaghi. A Hadamard-type inequality for fuzzy integrals based on r-convex functions. Soft Computing. 2015; 20 (8):3117-3124.

Chicago/Turabian Style

Sadegh Abbaszadeh; Madjid Eshaghi. 2015. "A Hadamard-type inequality for fuzzy integrals based on r-convex functions." Soft Computing 20, no. 8: 3117-3124.

Journal article
Published: 28 July 2015 in Journal of Fixed Point Theory and Applications
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We consider the following quadratic and quartic functional equations:

ACS Style

Madjid Eshaghi Gordji; H. Khodaei; Th. M. Rassias. Fixed points and generalized stability for quadratic and quartic mappings in $${C^*}$$ C ∗ -algebras. Journal of Fixed Point Theory and Applications 2015, 17, 703 -715.

AMA Style

Madjid Eshaghi Gordji, H. Khodaei, Th. M. Rassias. Fixed points and generalized stability for quadratic and quartic mappings in $${C^*}$$ C ∗ -algebras. Journal of Fixed Point Theory and Applications. 2015; 17 (4):703-715.

Chicago/Turabian Style

Madjid Eshaghi Gordji; H. Khodaei; Th. M. Rassias. 2015. "Fixed points and generalized stability for quadratic and quartic mappings in $${C^*}$$ C ∗ -algebras." Journal of Fixed Point Theory and Applications 17, no. 4: 703-715.

Journal article
Published: 04 March 2015 in Annals of the Alexandru Ioan Cuza University - Mathematics
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In this paper, we introduce the concept of a generalized weak contraction for set-valued mappings defined on quasi-metric spaces. We show the existence of fixed points for generalized weakly contractive set-valued mappings. Indeed, we have a generalization of Nadler’s fixed point theorem and Banach’s fixed point theorem in quasi-metric spaces and, further, investigate the convergence of iterate scheme of the form xn+1 ∈ Fxn with error estimates.

ACS Style

M. Eshaghi Gordji; S. Mohseni Kolagar; Y.J. Cho; H. Baghani. Fixed Point Theorems for Set-Valued Mappings under Contractive Condition in Quasi-Metric Spaces. Annals of the Alexandru Ioan Cuza University - Mathematics 2015, 1 .

AMA Style

M. Eshaghi Gordji, S. Mohseni Kolagar, Y.J. Cho, H. Baghani. Fixed Point Theorems for Set-Valued Mappings under Contractive Condition in Quasi-Metric Spaces. Annals of the Alexandru Ioan Cuza University - Mathematics. 2015; ():1.

Chicago/Turabian Style

M. Eshaghi Gordji; S. Mohseni Kolagar; Y.J. Cho; H. Baghani. 2015. "Fixed Point Theorems for Set-Valued Mappings under Contractive Condition in Quasi-Metric Spaces." Annals of the Alexandru Ioan Cuza University - Mathematics , no. : 1.

Journal article
Published: 01 March 2015 in Mathematical Sciences
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ACS Style

Madjid Eshaghi Gordji; Najmeh Karimipour Samani; Choonkil Park. Retraction Note to: Approximation of Jordan homomorphisms in Jordan-Banach algebras. Mathematical Sciences 2015, 9, 57 -57.

AMA Style

Madjid Eshaghi Gordji, Najmeh Karimipour Samani, Choonkil Park. Retraction Note to: Approximation of Jordan homomorphisms in Jordan-Banach algebras. Mathematical Sciences. 2015; 9 (1):57-57.

Chicago/Turabian Style

Madjid Eshaghi Gordji; Najmeh Karimipour Samani; Choonkil Park. 2015. "Retraction Note to: Approximation of Jordan homomorphisms in Jordan-Banach algebras." Mathematical Sciences 9, no. 1: 57-57.

Journal article
Published: 01 January 2013 in Journal of Inequalities and Applications
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Let n = 3 k + 2 for some k ∈ N . We investigate the generalized Hyers-Ulam stability of n-homomorphisms and n-derivations on fuzzy ternary Banach algebras related to the generalized Cauchy-Jensen additive functional equation.

ACS Style

Feysal Hassani; Ali Ebadian; Madjid Eshaghi Gordji; Hassan Azadi Kenary. Nearly n-homomorphisms and n-derivations in fuzzy ternary Banach algebras. Journal of Inequalities and Applications 2013, 2013, 71 .

AMA Style

Feysal Hassani, Ali Ebadian, Madjid Eshaghi Gordji, Hassan Azadi Kenary. Nearly n-homomorphisms and n-derivations in fuzzy ternary Banach algebras. Journal of Inequalities and Applications. 2013; 2013 (1):71.

Chicago/Turabian Style

Feysal Hassani; Ali Ebadian; Madjid Eshaghi Gordji; Hassan Azadi Kenary. 2013. "Nearly n-homomorphisms and n-derivations in fuzzy ternary Banach algebras." Journal of Inequalities and Applications 2013, no. 1: 71.

Journal article
Published: 01 January 2013 in Journal of Inequalities and Applications
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By using Diaz and Margolis fixed point theorem, we establish the generalized Hyers-Ulam-Rassias stability of the ternary homomorphisms and ternary derivations between fuzzy ternary Banach algebras associated to the following ( m , n ) -Cauchy-Jensen additive functional equation:

ACS Style

G Asgari; Yj Cho; Yw Lee; M Eshaghi Gordji. Fixed points and stability of functional equations in fuzzy ternary Banach algebras. Journal of Inequalities and Applications 2013, 2013, 166 .

AMA Style

G Asgari, Yj Cho, Yw Lee, M Eshaghi Gordji. Fixed points and stability of functional equations in fuzzy ternary Banach algebras. Journal of Inequalities and Applications. 2013; 2013 (1):166.

Chicago/Turabian Style

G Asgari; Yj Cho; Yw Lee; M Eshaghi Gordji. 2013. "Fixed points and stability of functional equations in fuzzy ternary Banach algebras." Journal of Inequalities and Applications 2013, no. 1: 166.

Journal article
Published: 27 July 2012 in Advances in Difference Equations
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We apply the fixed point method to prove the stability of the systems of functional equations

ACS Style

Madjid Eshaghi Gordji; Hamid Khodaei; Razieh Khodabakhsh; Choonkil Park. Fixed points and quadratic equations connected with homomorphisms and derivations on non-Archimedean algebras. Advances in Difference Equations 2012, 2012, 128 .

AMA Style

Madjid Eshaghi Gordji, Hamid Khodaei, Razieh Khodabakhsh, Choonkil Park. Fixed points and quadratic equations connected with homomorphisms and derivations on non-Archimedean algebras. Advances in Difference Equations. 2012; 2012 (1):128.

Chicago/Turabian Style

Madjid Eshaghi Gordji; Hamid Khodaei; Razieh Khodabakhsh; Choonkil Park. 2012. "Fixed points and quadratic equations connected with homomorphisms and derivations on non-Archimedean algebras." Advances in Difference Equations 2012, no. 1: 128.

Journal article
Published: 01 January 2012 in Fixed Point Theory and Applications
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In this paper, we provide an example to show that some results obtained in [Mongkolkeha et al. in Fixed Point Theory Appl. 2011, doi:10.1186/1687-1812-2011-93] are not valid.

ACS Style

Hossein Dehghan; A Ebadian; M Eshaghi Gordji. Comment on ‘Fixed point theorems for contraction mappings in modular metric spaces, Fixed Point Theory and Applications, doi:10.1186/1687-1812-2011-93, 20 pages’. Fixed Point Theory and Applications 2012, 2012, 144 .

AMA Style

Hossein Dehghan, A Ebadian, M Eshaghi Gordji. Comment on ‘Fixed point theorems for contraction mappings in modular metric spaces, Fixed Point Theory and Applications, doi:10.1186/1687-1812-2011-93, 20 pages’. Fixed Point Theory and Applications. 2012; 2012 (1):144.

Chicago/Turabian Style

Hossein Dehghan; A Ebadian; M Eshaghi Gordji. 2012. "Comment on ‘Fixed point theorems for contraction mappings in modular metric spaces, Fixed Point Theory and Applications, doi:10.1186/1687-1812-2011-93, 20 pages’." Fixed Point Theory and Applications 2012, no. 1: 144.

Journal article
Published: 01 January 2012 in Mathematical Sciences
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ACS Style

Madjid Eshaghi Gordji; Najmeh Karimipour Samani; Choonkil Park. Approximation of Jordan homomorphisms in Jordan-Banach algebras. Mathematical Sciences 2012, 6, 55 .

AMA Style

Madjid Eshaghi Gordji, Najmeh Karimipour Samani, Choonkil Park. Approximation of Jordan homomorphisms in Jordan-Banach algebras. Mathematical Sciences. 2012; 6 (1):55.

Chicago/Turabian Style

Madjid Eshaghi Gordji; Najmeh Karimipour Samani; Choonkil Park. 2012. "Approximation of Jordan homomorphisms in Jordan-Banach algebras." Mathematical Sciences 6, no. 1: 55.