Math Problem Statement

Is 𝑝 → 𝑞 ≡ ¬𝑝 ∨ 𝑞?

Solution

Yes, the logical implication pqp \to q (read as "if pp, then qq") is indeed logically equivalent to ¬pq\neg p \lor q (read as "not pp or qq"). This is a well-known equivalence in propositional logic.

Here’s why:

  • pqp \to q can be interpreted as saying that "if pp is true, then qq must also be true."
  • This is equivalent to saying that either pp is false (i.e., ¬p\neg p is true), or qq is true.

Hence, pq¬pqp \to q \equiv \neg p \lor q.

Truth table for verification:

ppqqpqp \to q¬pq\neg p \lor q
TTTT
TFFF
FTTT
FFTT

Both expressions yield the same truth values, proving they are logically equivalent.

Would you like to explore more on logical equivalences or anything else?

Related Questions:

  1. What is the truth table for pqp \lor q?
  2. Can you explain the difference between pqp \to q and pqp \leftrightarrow q?
  3. How do De Morgan's laws relate to ¬pq\neg p \lor q?
  4. What are tautologies and contradictions in logic?
  5. How can we prove pq¬pqp \to q \equiv \neg p \lor q using Boolean algebra?

Tip:

Always use truth tables when trying to establish logical equivalences—they visually demonstrate the consistency of two logical statements!

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Math Problem Analysis

Mathematical Concepts

Propositional Logic
Logical Equivalences
Truth Tables

Formulas

p → q ≡ ¬p ∨ q

Theorems

Logical Implication
Disjunction (OR)
Negation (NOT)

Suitable Grade Level

Grades 10-12