Burnside's Lemma
This quiz is designed to test your understanding of Burnside's Lemma, a fundamental result in combinatorics that relates the number of orbits of a group action to the number of fixed points.
Questions
Let $G$ be a group acting on a set $X$. The number of orbits of $G$ on $X$ is equal to:
- The number of elements in $G$
- The number of elements in $X$
- The number of fixed points of $G$ on $X$
- The average number of elements in each orbit
If a group $G$ acts on a set $X$ and every element of $X$ is fixed by every element of $G$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $H$ is a subgroup of $G$, then the number of orbits of $H$ on $X$ is:
- Less than or equal to the number of orbits of $G$ on $X$
- Equal to the number of orbits of $G$ on $X$
- Greater than or equal to the number of orbits of $G$ on $X$
- Unrelated to the number of orbits of $G$ on $X$
Let $G$ be a group acting on a set $X$. If $G$ is transitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is regular on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is doubly transitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is triply transitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is $k$-transitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is primitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is imprimitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is sharply transitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is semiregular on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is quasiprimitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is doubly quasiprimitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$
Let $G$ be a group acting on a set $X$. If $G$ is triply quasiprimitive on $X$, then the number of orbits of $G$ on $X$ is:
- 0
- 1
- $|G|$
- $|X|$