Which of the following is not well-formed formula WFF )?

1 Expert Answer



((∼A)∨(∼B)) is not a well formed formula.

What is a well-formed formula in logic?

In mathematical logic, propositional logic and predicate logic, a well-formed formula, abbreviated WFF or wff, often simply formula, is a finite sequence of symbols from a given alphabet that is part of a formal language. A formal language can be identified with the set of formulas in the language.

What makes a well-formed formula?

Well-Formed Formula(WFF) is an expression consisting of variables(capital letters), parentheses, and connective symbols. An expression is basically a combination of operands & operators and here operands and operators are the connective symbols.

What is syllogistic reasoning?

Syllogism derives from the Greek word syllogismos, meaning conclusion or inference. A simple syllogism definition is that it’s a form of deductive reasoning where you arrive at a specific conclusion by examining premises or ideas. For example: All roses are flowers.

What is well format?

Definition of well-formed



: produced by the correct application of a set of transformations : grammatical sense 2a grammar … specifies the infinite set of well-formed sentences— Jerry Fodor & Jerrold J. Katz.

What is predicate logic in artificial intelligence?

FOL is a mode of representation in Artificial Intelligence. It is an extension of PL. FOL represents natural language statements in a concise way. FOL is also called predicate logic. It is a powerful language used to develop information about an object and express the relationship between objects.

How does a syllogistic argument work?

A syllogism is a three-part logical argument, based on deductive reasoning, in which two premises are combined to arrive at a conclusion. So long as the premises of the syllogism are true and the syllogism is correctly structured, the conclusion will be true. An example of a syllogism is “All mammals are animals.

What makes a syllogism valid?

A syllogism is valid (or logical) when its conclusion follows from its premises. A syllogism is true when it makes accurate claims – that is, when the information it contains is consistent with the facts. To be sound, a syllogism must be both valid and true.

What is syllogistic inference?

A syllogism (Greek: συλλογισμός, syllogismos, ‘conclusion, inference’) is a kind of logical argument that applies deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true.

Are syllogisms always valid?

Form and Validity



Thus, the specific syllogisms that share any one of the 256 distinct syllogistic forms must either all be valid or all be invalid, no matter what their content happens to be. Every syllogism of the form AAA-1is valid, for example, while all syllogisms of the form OEE-3 are invalid.

Which type of reasoning uses the syllogism?

deductive reasoning

A common form of deductive reasoning is the syllogism, in which two statements — a major premise and a minor premise — together reach a logical conclusion.

Why is it important to understand how a syllogism functions when it comes to doing advocacy work?

We use syllogism in advocacy work because most of the time the person or group to whom we are addressing do not belong to us and people are reluctant towards accepting the unknown but with known things, they are very comfortable and accept them easily.

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