Is it possible for an argument to be sound and have a false conclusion? Explain your answer (in one or two sentences). (b) Is it possible for an argument to be invalid and have a true conclusion? Explain your answer (in one or two sentences). (c) Explain what a tautology is. (d) Explain what semantic entailment is.
Is it possible for an argument to be sound and have a false conclusion? Explain your answer (in one or two sentences). (b) Is it possible for an argument to be invalid and have a true conclusion? Explain your answer (in one or two sentences). (c) Explain what a tautology is. (d) Explain what semantic entailment is.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
(a) Is it possible for an argument to be sound and have a false conclusion? Explain
your answer (in one or two sentences).
(b) Is it possible for an argument to be invalid and have a true conclusion? Explain
your answer (in one or two sentences).
(c) Explain what a tautology is.
(d) Explain what semantic entailment is.
(e) State the deduction theorem.
(f) If A ⊨ B, then A, C ⊨ B. What is this feature of entailment known as?
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