System Validation (3): Requirements by modal formulas

System Validation (3): Requirements by modal formulas

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System Validation (3): Requirements by Modal Formulas

In the previous articles on system validation, we discussed the importance of ensuring that a system meets its requirements and functions as intended. One key aspect of system validation is defining and verifying the requirements that the system must satisfy. In this article, we will delve into the topic of requirements specification using modal formulas.

Modal logic is a branch of symbolic logic that deals with the formal representation of the modalities of necessity and possibility. In the context of system validation, modal formulas can be used to specify requirements in a concise and precise manner. By using modal formulas, system designers can express complex requirements using a formal language that is unambiguous and easy to interpret.

One common type of modal formula used in requirements specification is the “must” operator

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