Is every $\sigma$-algebra a Borel $\sigma$-algebra?
129194
Correspondences between Borel algebras and topological spaces
17764
What's the relationship between Borel set and set whose boundary is measure zero?
65098
Number of $\sigma$  -Algebra on the finite set
40383
Is it true that $|g| = |\phi(g)|$ for all homomorphisms $\phi: G \to G$ and $g \in G$?
120273
Showing that a collection of sets is a $\sigma$-algebra: either set or complement is countable
117185
The union of a strictly increasing sequence of $\sigma$-algebras is not a $\sigma$-algebra
36131
$\sigma$-algebra vs. $\sigma$-field: is there any difference?
38946
Show that $\{\cup_{n\in K} (n, n+1]: K \subset \mathbb{Z}\}$ is a $\sigma$-algebra on $\mathbb{R}$
103307
Generate the smallest $\sigma$-algebra containing a given family of sets
42341
Does product sigma algebra of n B(R) (borel) coincide with B(R^n)?
114929
Differences between the Borel measure and Lebesgue measure
94980
Measurable functions in a countable co-countable $\sigma$-algebra
142594
Verifying the interpretation of stopping times and stopping time $\sigma$-algebras
30996
If $\langle Ta, a\rangle \in \mathbb{R}$ for all $a$ then $T$ is self-adjoint
25811
Intuition for Conditional Expectation of $\sigma$-algebra
19996
Example where union of increasing sigma algebras is not a sigma algebra
3296
Proof That $\mathbb{R} \setminus \mathbb{Q}$ Is Not an $F_{\sigma}$ Set