The foreign exchange market (FOREX), as the largest financial market in the world in terms of trading volume, is a new international market that has created a new opportunity for currency exchange and has attracted the attention of governments and nations, including Muslims. Therefore, it is necessary to understand the relevant rules and regulations of this market and to examine its jurisprudential issues. Since no comprehensive research has been conducted on the jurisprudential examination of the principle of entering this market and its branches and details, this article examines the evidence of the prohibition of entering this market, which has been raised by the Central Bank and the Stock Exchange Organization, and does not fully understand the evidence of the prohibition of entering it, and on the other hand, it examines the legitimacy of opening an account in this market and analyzes the three forms of transactions (normal transactions, margin transactions, and contract for difference (CFD)) in this market from a jurisprudential perspective. The result is that there are eight forms of transactions in the first form, most of which are not valid, but in the second form, in addition to the previous problems, the problem of usury is also raised, which is void in case of dealing with the same type of currency, and the ruling is different according to different jurisprudential foundations. In the third form, which is based on the fluctuation of currency prices, the legitimacy of it is examined according to different foundations, and various possibilities regarding the nature of this transaction are raised. In addition, details such as whether the transaction is carried out by the person or the agent or whether the transaction is normal or virtual are also considered. Of course, it is clear that achieving this goal is possible through describing and analyzing jurisprudential propositions by collecting library data.

The purpose of this study is estimating and evaluating the value at risk in FOREX market. For this purpose based on logritme of Euro/Dollar ratio the value at risk were estimated to three methods: Parametric, Historical and Montecarlo, Simulization from 12/10/2004 to 12/3/2009 in time periods 3, 6, 9, 12, 36 months and in confidence level 90, 95, 99 percent. The results of multi-variable tests demonstrated that there is no significant difference in value at risk average based on three methods and the confidence level and multi-time periods on two currency Euro and dollar. The results of back tests demonstrated that validity of calculations for the minimum value at risk is not confirmed but for the maximum value at risk is confirmed.

The purpose of this study is estimating and evaluating the value at risk in FOREX market. For this purpose based on logritme of Euro/Dollar ratio the value at risk were estimated to three methods: Parametric, Historical and Montecarlo, Simulization from 12/10/2004 to 12/3/2009 in time periods 3, 6, 9, 12, 36 months and in confidence level 90, 95, 99 percent. The results of multi-variable tests demonstrated that there is no significant difference in value at risk average based on three methods and the confidence level and multi-time periods on two currency Euro and dollar. The results of back tests demonstrated that validity of calculations for the minimum value at risk is not confirmed but for the maximum value at risk is confirmed.

FOREX is one of the most important and largest financial markets in the world. This market primarily used to reduce the risk of exchange rate changes and the second place as a way to profit from the difference in rates. This article has two main approaches: First to introduce and review how activity in the FOREX market, the second, most important preconditions for the presence in this market forecast exchange rate changes, the factors affecting the real exchange rate in using the ARDL method is studied. The survey results show that the variables government spending, oil revenues, capital flows and the degree of openness of the economy, including the main factors influencing the real exchange rate in Iran.

In the last 15 years, some methods have been proposed for forecasting based on fuzzy time series. One of the most important issues that affect the forecasting results in these models is the length of intervals. There are some studies on this issue but in most of them, length of intervals are predefined or even in some studies the interval’s length are the same. In this study we propose a model to determine effective intervals by using Simulated Annealing algorithm. And then we exercise this model on the FOREX currency market on some currency exchange rates (EUR/USD euro/US dollar, CAD/USD US Dollar/Canadian Dollar, GBP/USD British Pound/US Dollar, GBP/CHF British Pound/Swiss Franc) also we compare our model with other’s on forecasting Alabama University Enrollment.

The FOREX market is one of the most important financial markets, which indirectly, on the Internet and through brokerage, provides traders with the possibility of buying and selling foreign currencies. On the one hand, the following article explains the nature of the FOREX market and its structure using a descriptive-analytical method, and on the other hand, it examines its jurisprudential nature by referring to the Qur'an and Sunnah. In reviewing the criticisms about the mentioned market, the method of investigation is in two main areas, first, the micro approach (the contract between the trader and the broker) and its separation from the macro approach (the interest of governance) from one point of view, and secondly, the investigation in the form of distinguishing between the nature of the FOREX market and the precedents. and the market entry requirements are defined; The results of this research show that based on jurisprudential principles, there is no problem with the principle of transaction in such a market because it has all the conditions of validity and evidences such as "Afwa al-Aqud" and "Muslims on their terms" are valid. In contrast to this theory, jurisprudential problems such as the right to falsehood, the rule of negation of the mustache, false, formal and usurious nature of the transaction, and legal problems such as the lack of prosecution in international forums and the impossibility of obtaining a license to operate in the FOREX market at the level of the national economy.

Foreign exchange trading or "FOREX" is a decentralized global market in which currencies are traded in pairs and traders benefit from currency price changes. The ban on this market by the Iranian legislator should be taken into consideration. This article assesses the angles of these transactions by examining the nature of the FOREX market and complaining about it in a descriptive analytical approach. The arguments presented based on the similarities of gambling transactions are reasons for the illegal FOREX market. Because financial damage is not just for a trader and in turn affects many communities; several laws, including injunctions, bans on deception, profits in the country, etc., are the basis for analysis and evaluation. The article has been studied. With all of the above, not only religious status, but also the prohibition of these transactions is clear in Iran's law.

Objective: The present paper aims to achieve a suitable model for predicting the behavior of major currency pairs in the FOREX market based on the chaos theory and a hybrid algorithm. Methods: This is an applied research study. The statistical population of the current study included the major currency pairs present in the FOREX market having the largest trading shares (dollars, pounds, euros, and yen). The population comprised a total of 3, 888 views i. e. 1, 296 views for each currency pair. The trading period lasted from the beginning of January 2017 until the end of 2021. After examining the data and establishing the existence of chaos among the data, using two BDS tests and Lyapunov maximum view, three combined models were tested to achieve the best and most reliable status. Results: According to the results obtained from the BDS test and the maximum view of Lyapunov, there was chaos in the data of the three examined currency pairs. In addition, the chaos model with perceptron multilayer and elite nondominant sorting genetic algorithm performed better than other models in this study. The values of the Tails inequality coefficient and DM test statistics also indicated the hybrid superiority of the chaos model with perceptron multilayer and elite non-dominant genetic sorting algorithm. Conclusion: The results proved the chaos model with perceptron multilayer and elite non-dominant sorting genetic algorithm to be superior to the other two hybrid models.