Disjunctive Syllogism - Related Argument Forms

Related Argument Forms

Unlike modus ponendo ponens and modus ponendo tollens, with which it should not be confused, disjunctive syllogism is often not made an explicit rule or axiom of logical systems, as the above arguments can be proven with a (slightly devious) combination of reductio ad absurdum and disjunction elimination.

Other forms of syllogism:

  • hypothetical syllogism
  • categorical syllogism

Disjunctive syllogism holds in classical propositional logic and intuitionistic logic, but not in some paraconsistent logics.

Read more about this topic:  Disjunctive Syllogism

Famous quotes containing the words related, argument and/or forms:

    A parent who from his own childhood experience is convinced of the value of fairy tales will have no difficulty in answering his child’s questions; but an adult who thinks these tales are only a bunch of lies had better not try telling them; he won’t be able to related them in a way which would enrich the child’s life.
    Bruno Bettelheim (20th century)

    The difficult part in an argument is not to defend one’s opinion, but rather to know it.
    André Maurois (1885–1967)

    The blood weeps from my heart when I do shape,
    In forms imaginary, th’ unguided days
    And rotten times that you shall look upon
    When I am sleeping with my ancestors.
    William Shakespeare (1564–1616)