Practice Theorem Statement And Necessary Condition (26.1.1) - Proof of Hall's Marriage Theorem
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Theorem Statement and Necessary Condition

Practice - Theorem Statement and Necessary Condition

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Practice Questions

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Question 1 Easy

Define a bipartite graph.

💡 Hint: Think about how vertices are separated.

Question 2 Easy

What does it mean for a graph to have a complete matching?

💡 Hint: Imagine pairing a group of boys and girls at a dance.

4 more questions available

Interactive Quizzes

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Question 1

What is the main condition of Hall's Marriage Theorem?

|N(A)| < |A|
|N(A)| = |A|
|N(A)| ≥ |A|

💡 Hint: Think about neighbor requirements for matching.

Question 2

If there exists a complete matching, can we say Hall's condition holds?

True
False

💡 Hint: Consider how matching pairs must work.

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Challenge Problems

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Challenge 1 Hard

Given a bipartite graph where V1 = {v1, v2, v3} and V2 = {u1, u2}. If v1 is connected to both u1 and u2, and v2 is only connected to u1, while v3 is connected to both. Determine if a complete matching exists.

💡 Hint: Count pairs and check connections.

Challenge 2 Hard

Design a bipartite graph that satisfies Hall's condition but does not allow for a complete matching. Explain how.

💡 Hint: Think of how connections can visually appear.

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