Localisation : an example where $r's-rs'\neq 0$ but $(r,s)\sim(r',s')$
138481
$f(x)=x/1$ is not injective?
27347
Verify that $\left|\int_{\gamma} \exp(iz^2)dz\right| \leq \frac{\pi\big(1-\exp(-r^2)\big)}{4r}$ where $\gamma(t)=re^{it}$, for $0\leq t \leq \pi/4$.
9301
Application of Green's Theorem when undefined at origin
65379
Deriving $\neg R$ from $\{R↔(R∨(P∧¬P)), R↔¬P, ¬P→(P↔(Q→Q)), P→Q\}$
16779
Why does $\left\| {\left| A \right|} \right\| \le \left\| {\left| I \right|} \right\|$, for every doubly stochastic matrix $A \in M_n$?
156901
Showing that $X\sim E[X\mid\mathcal{G}]$ implies $X=E[X\mid\mathcal{G}]$ almost surely
133975
Localising a polynomial ring and non-maximal prime ideal
70580
$R^2$ of 1 but RMSE > 0
127664
Inverse elements in the absence of identities/associativity.
103924
Kernel of a substitution map
1117
Is there a bijection between $(0,1)$ and $\mathbb{R}$ that preserves rationality?
55679
Does there exist a continuous function from [0,1] to R that has uncountably many local maxima?
139593
$(S_0+\ldots + S_n)_{n\geq 0}$ not a Markov chain
73689
A question about the equivalence relation on the localization of a ring.
102030
Getting the expectation symbol to behave like $\sum$ instead of $\Sigma$
90826
Constructing a subset not in $\mathcal{B}(\mathbb{R})$ explicitly
81295
Transforming arbitrary distributions to distributions on $[0,1]$