The Venn diagram you've provided shows two sets, A and B, where Set A is entirely inside Set B. This implies that Set A is a subset of Set B, meaning that every element of Set A is also in Set B.

In mathematical terms, this can be written as: $A \subseteq B$ or "A is a subset of B."

Would you like more details on Venn diagrams and subsets, or how this concept can be applied in problems?

Here are some related questions:

1. What is the definition of a subset in set theory?
2. Can two sets be subsets of each other? If so, what does that imply?
3. How do we represent the union and intersection of two sets in a Venn diagram?
4. What is the difference between proper and improper subsets?
5. How would the diagram change if the sets A and B were disjoint?

Tip: Venn diagrams are helpful tools in visualizing relationships between sets, especially when dealing with operations like union, intersection, and complements.