The existence of a leaf in a tree (graph theory)

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Health & Science mathematics graph graph theory tree leaf cycle

Episode 29.

The existence of a leaf in a tree (graph theory).

Definition. A tree is a connected graph without cycles.
Definition. A leaf in a tree is a vertex of degree 1.
Theorem. Any tree contains at least 1 leaf.

The same video on YouTube:
https://youtu.be/xFbfBLO-GBk

The same video on Telegram:
https://t.me/mathematical_bunker/53

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