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How Many Nonisomorphic Unrooted Trees Are There with Four Vertices

question 23

Essay

How many nonisomorphic unrooted trees are there with four vertices? Draw these trees.


Definitions:

Replace Defective

The process of substituting goods or services that are flawed or do not meet the contractual specifications.

Commercial Unit

A standard of goods or products that are considered as a single whole for purposes of sale and division, often relevant in transactions and legal contracts.

Bales of Hay

Bundles of hay that have been tightly bound with twine or wire and are used for feeding livestock or as agricultural mulch.

Accepted

Recognized as true or valid; in the context of contracts, to agree to the terms of an offer.

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