Are All Generating Sets for the Borel Algebra Uncountable?
138768
Showing that the family of Borel sets is countably generated
72750
Uncountable number of mutually disjoint countable sets in $\mathbb R$
53642
Cardinality of Borel sigma algebra
16048
Approximating a $\sigma$-algebra by a generating algebra
42652
Must $k$-subalgebra of $k[x]$ be finitely generated?
55717
cardinality of the Borel $\sigma$-algebra of a second countable space
18360
Proof that the irrational numbers are uncountable
129109
Is the set of polynomial with coefficients on $\mathbb{Q}$ enumerable?
101095
Constructing an example s.t. $\operatorname{Hom}_R(M,N)$ is not finitely generated
63276
Is an arbitrary union of a chain of countable sets countable?
92309
The $\sigma$-algebra of subsets of $X$ generated by a set $\mathcal{A}$ is the smallest sigma algebra including $\mathcal{A}$
19297
Is the cofinite topology on an uncountable set first countable?
93389
Uncountable sets of Hausdorff dimension zero
40937
Is the set of partial order relations over $ \mathbb{N}$ countable?
105333
Generated $\sigma$-algebras with cylinder set doesn't contain the space of continuous functions
64118
Number of elements in a finite $\sigma$-algebra
109054
Given an infinite set of cardinality $X$, is there a chain in $\mathcal P(X)$ of the same cardinalty of $\mathcal P(X)$?