Find the cardinality of the set $~\{t \in[0,3 \pi]: x(t)=0\}$
72872
Number of zeroes of solution to $y''(x)+e^{x^2}y(x)=0$ in $[0,3π]$
272
Cantor Sets/nonempty/cardinality
146436
Cardinality of the set of bijective functions on $\mathbb{N}$?
93330
Cardinality of all cardinalities
109968
Let $X= \{ A \subset \mathbb{N} : \mathbb{N} \backslash A \text{ is finite}\}$. What is the cardinality of $X$? Prove it.
83518
Proving Two sets have same cardinality
85681
Cardinality of polynomials with real coefficients
71967
cardinality of the set of $ \varphi: \mathbb N \to \mathbb N$ such that $\varphi$ is an increasing sequence
117478
Prove that $\mathbb{R}$ and the interval $(0, \infty)$ have the same cardinality.
155311
How to get a set $E$ such that $0<\mu(E\cap I)<\mu(E)$ for all interval $I$?
149673
Cardinality of an infinite union of finite sets
31318
Cardinality of cartesian square
106325
Question about Cardinality
79974
The cardinality of Lebesgue sets
9696
The interval [0,1] andd [3,5] are equivalent. Is my proof correct?
101669
Cardinality of the Set of all finite subset of $\mathbb{R}$
158671
Cardinality of a set that consists of all existing cardinalities