كليدواژه :
subcontrary , Truth , كليه , propositions , موجيه , contrary , falsity , جزييه , contradictory , استنتاج هاي بي واسطه , subalternatory propositions , تضاد , inferences , سالبه , quantified , استنتاج ها , صدق , قضيه هاي محصوره , تناقض , كذب , فلسفه , قضيه ها
چكيده لاتين :
There is some confusion in definition of all kinds of immediate inferences (like contradictory, contrary, sub contrary and subaltern Tory propositions) and also in the manner of their truth and falsity in the old logic books; and something is claimed in these books without proof. It is attempted in this paper, after showing this logical disorder in some of these texts, to clarify and classify those propositions that must be proved for those claims of truth or falsity; and then the arguments that are necessary for those claims will be brought.
