The study of the principles and criteria of valid inference and demonstration.
It's hard to work out his system of logic.
The mathematical study of relationships between rigorously defined concepts and of mathematical proof of statements.
The part of a system (usually electronic) that performs the boolean logic operations, short for logic gates or logic circuit.
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.
A formal or informal language together with a deductive system or a model-theoretic semantics.
Any system of thought, whether rigorous and productive or not, especially one associated with a particular person.
logical
To engage in excessive or inappropriate application of logic.
To apply logical reasoning to.
To overcome by logical argument.
A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).
The genuinity - as distinguished from the efficacity or the regularity - of a sacrament as a result of some formal dispositions being fulfilled.
The state of being valid, authentic or genuine.
State of having legal force.