Logic vs Tautology - What's the difference?
logic | tautology |
logical
(uncountable) A method of human thought that involves thinking in a linear, step-by-step manner about how a problem can be solved. Logic is the basis of many principles including the scientific method.
(philosophy, logic) The study of the principles and criteria of valid inference and demonstration.
* 2001 , Mark Sainsbury, Logical Forms — An Introduction to Philosophical Logic, Second Edition , Blackwell Publishing, p. 9
(uncountable, mathematics) The mathematical study of relationships between rigorously defined concepts and of proof of statements.
(countable, mathematics) A formal or informal language together with a deductive system or a model-theoretic semantics.
(uncountable) Any system of thought, whether rigorous and productive or not, especially one associated with a particular person.
(uncountable) The part of a system (usually electronic) that performs the boolean logic operations, short for logic gates or logic circuit.
(pejorative) To engage in excessive or inappropriate application of logic.
*
To apply logical reasoning to.
*
To overcome by logical argument.
*
(uncountable) redundant use of words
(countable) An expression that features tautology.
* 1946 , Bertrand Russell, History of Western Philosophy :
(countable, logic) A statement that is true for all values of its variables
As an adjective logic
is logical.As a noun tautology is
(uncountable) redundant use of words.logic
English
Alternative forms
* logick (archaic)Adjective
Noun
(wikipedia logic)- An old tradition has it that there are two branches of logic: deductive logic and inductive logic. More recently, the differences between these disciplines have become so marked that most people nowadays use "logic" to mean deductive logic, reserving terms like "confirmation theory" for at least some of what used to be called inductive logic. I shall follow the more recent practice, and shall construe "philosophy of logic" as "philosophy of deductive logic".
- It's hard to work out his system of logic .
- Fred is designing the logic for the new controller.
Synonyms
* formal logic, modern logic * formal system * (philosophy ): predicate logicDerived terms
(Derived terms) * Aristotelian logic * Boolean logic * chop logic * combinational logic * computability logic * deontic logic * diode logic * diode-transistor logic * first-order logic * formal logic * fuzzy logic * intensional logic * interpretability logic * intuitionistic logic * logic chopper * many-sorted logic * material logic * mathematical logic * modal logic * modern logic * multi-valued logic * negative logic * non-Aristotelian logic * philosophical logic * positive logic * predicate logic * propositional logic * provability logic * resistor-transistor logic * sequential logic * symbolic logic * traditional logic * transistor-transistor logicVerb
External links
* * *tautology
English
Noun
- It is tautology to say, "Forward Planning".
- ''The expression "raze to the ground" is a tautology, since the word "raze" includes the notion "to the ground".
- Pure mathematics consists of tautologies , analogous to ‘men are men’, but usually more complicated.
- Given a Boolean A, "A OR (NOT A)" is a tautology .
- A logical statement which is neither a tautology nor a contradiction is a contingency.
- A tautology''' can be verified by constructing a truth tree for its negation: if all of the leaf nodes of such truth tree end in X's, then the original (pre-negated) formula is a '''tautology .