Скачать или смотреть Introduction to Logic and Scientific Language - තර්ක ශාස්ත්‍රය හා විද්‍යාත්මක ක්‍රමය විශය හැදින්වීම.

Logic is the study of the criteria used in evaluating inferences or arguments.

An inference is a process of reasoning in which a new belief is formed on the basis of or in virtue of evidence or proof supposedly provided by other beliefs. An argument is a collection of statements or propositions, some of which are intended to provide support or evidence in favor of one of the others. A statement or proposition is something that can either be true or false. We usually think of a statement as a declarative sentence, or part of a sentence.

The premises of an argument are those statements or propositions in it that are intended to provide the support or evidence. The conclusion of an argument is that statement or proposition for which the premises are intended to provide support. (In short, it is the point the argument is trying to make.)