Generated sigma algebra and its countable subcollection
51134
If $E \in \sigma(\mathcal{C})$ then there exists a countable subset $\mathcal{C}_0 \subseteq \mathcal{C}$ with $E \in \sigma(\mathcal{C}_0)$
151467
An infinite generating set of a finite dimensional vector space contains a basis
120442
Prove Borel sigma-algebra translation invariant
18429
Counting measure proof
144211
a second course in abstract algebra
19996
Example where union of increasing sigma algebras is not a sigma algebra
139622
Generator of rational functions unchanged under $\sigma(X) = X + 1$
4111
Outer measure is countably subadditive
65098
Number of $\sigma$  -Algebra on the finite set
153306
Number of sigma algebras for set with 4 elements
92309
The $\sigma$-algebra of subsets of $X$ generated by a set $\mathcal{A}$ is the smallest sigma algebra including $\mathcal{A}$
83830
Sigma algebra generated by the set of all singletons
59289
Nested Sequence of Topological Space and the Coherent Topology; Munkres Topology 35.9
16048
Approximating a $\sigma$-algebra by a generating algebra
103769
The Cartesian product of a finite number of countable sets is countable
125894
Prove that $\mathbb{Q}$ belongs to the Borel $\sigma$-algebra of $\mathbb{R}$
10247
What is the minimum $ \sigma$-algebra that contains open intervals with rational endpoints