A statement form that has only true substitution instances is called ……………………

Related MCQs

• Statement forms that have both true and false statements among their substitution instances are called ……………………………………………..
• If the specific form of a given argument has any substitution instance whose premises are true and whose conclusion is false, then the given argument is.
• Any argument that results from the substitution of statements for statement variables in an argument form is called ………………………………
• ’statement form from which the statement results by substituting a different simple statement for each different statement variable’ is called ……………………..
• ………………………… is any sequence of symbols containing statement variables but no statements, such that when statements are substituted for the statement\ variables-the same statement being substituted for the same statement variable throughout- the result is a statement
• In case an argument is produced by substituting a different simple statement for each different statement variable in an argument form, that argument form is called ……………………
• ………………………… is defined as any argument that is a substitution instance of an elementary valid argument form
• An argument form is valid if and only if it’s expression in the form of a conditional statement is ……………
• …………………………… can be defined as an array of symbols containing statement variables but no statements, such that when statements are substituted for statement variables- the same statement being substituted for the same statement variable throughout – the result is an argument
• “If a statement is true, then it is implied by any statement whatever” is symbolized as