# Ravinder Singh

Areas of Interest
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##### Existential import in Syllogism: an illusion
Here Author proves that universal affirmative (UA) and universal negative (UN) do have existential import i.e. definitely have at least one element and existential import theory in syllogism is an illusion. This illusion is due to the fact that Universal set contains infinite number of null sets (void points) identical in all respects but none have individual address. While existential theory wrongly assumes existence of only one possible null set (void point) for a given set.
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##### Raval’s method a Simplified approach to Propositional Logic Arguments
Basic Argument forms Modus Ponens , Modus Tollens , Hypothetical Syllogism and Dilemma contains ‘If –then’ conditions. Conclusions from the Arguments containing ‘If –then’ conditions can be deduced very easily without any significant memorization by applying Raval’s method. Method: In Raval’s method If P then Q is written as P (2\$) – Q (1\$) and viewed numerically, in currency form i.e. P is viewed as 2\$ and Q is viewed as 1\$ and implications from this notations are valid conclusions. If one has …Read more
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##### Aristotle's syllogism as simple as ABC by new transformed Raval's notations
Transformed RAVAL NOTATION solves Syllogism problems very quickly and accurately. This method solves any categorical syllogism problem with same ease and is as simple as ABC… In Transformed RAVAL NOTATION, each premise and conclusion is written in abbreviated form, and then conclusion is reached simply by connecting abbreviated premises.NOTATION: Statements (both premises and conclusions) are represented as follows: Statement Notation a) All S are P, …Read more