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14, OR, Logical disjunction; 15, true, Tautology. Each logic operator can be used in an assertion about variables and operations, showing a basic rule of inference. Examples: The column-14 operator (OR), shows Addition rule: when p=T (the hypothesis selects the first two lines of the table), we see (at column-14) that p∨q=T.
In propositional logic, material implication [1] [2] is a valid rule of replacement that allows a conditional statement to be replaced by a disjunction in which the antecedent is negated. The rule states that P implies Q is logically equivalent to not- P {\displaystyle P} or Q {\displaystyle Q} and that either form can replace the other in ...
Urdu literature (Urdu: ادبیاتِ اُردُو, “Adbiyāt-i Urdū”) comprises the literary works, written in the Urdu language.While it tends to be dominated by poetry, especially the verse forms of the ghazal (غزل) and nazm (نظم), it has expanded into other styles of writing, including that of the short story, or afsana (افسانہ).
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Literature written in Hindi-Urdu was not common prior to the 1700s. [14] In North India, rich literary cultures existed in Awadhi and Brajbhasha, with earliest Awadhi texts dating to the 14th century. [15] In Delhi, poets wrote in Persian, while Rekhta/Hindvi (what is now recognizable as Hindi-Urdu) did not have the same literary recognition. [16]
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Theories over constructive logics can exhibit the disjunction property. The pure intuitionistic propositional calculus does so as well. In particular, it means the excluded middle disjunction for an un-rejectable statement is provable exactly when is provable. This also means, for examples, that the excluded middle disjunction for some the ...
Urdu poetry (Urdu: اُردُو شاعرى Urdū šāʿirī) is a tradition of poetry and has many different forms. Today, it is an important part of the culture of India and Pakistan . According to Naseer Turabi, there are five major poets of Urdu: Mir Taqi Mir (d. 1810), Mirza Ghalib (d. 1869), Mir Anees (d. 1874), Muhammad Iqbal (d. 1938 ...