What are the differences between $H_n(X/A)$ and $H_n(X,A)$ for $A\subset X$?
36485
$H_n(X,A) \not \approx \tilde{H}_n(X/A)$
79826
$gHg^{-1}\subset H$ whenever $Ha\not = Hb$ implies $aH\not =bH$
80916
How to prove that if $A\subseteq A\times A$, then $A=\varnothing$?
67709
Stuck with proof for $\forall A\forall B(\mathcal{P}(A)\cup\mathcal{P}(B)=\mathcal{P}(A\cup B)\rightarrow A\subseteq B \vee B\subseteq A)$
147627
Relation between condition numbers $\kappa(A^T A)$ and $\kappa(A)$
55023
if $A$ subset of $B$ then $P(B)-P(A)=P(B\setminus A)\ge 0$
80827
Let $A$ be a nonempty subset of $\mathbb{R}$. Prove...
141318
$\subset$ vs $\subseteq$ when *not* referring to strict inclusion
64320
Prove that if $0<a<Pr(A)$ then there exists $B\subset A$ such that $Pr(B)=a$
92309
The $\sigma$-algebra of subsets of $X$ generated by a set $\mathcal{A}$ is the smallest sigma algebra including $\mathcal{A}$
101486
Understanding that $A = \{x\in \ell_2: |x_n| \leq \frac{1}{n}, n = 1,2,...\}$ is compact in $l_2$.
18527
Confusion on Derived Sets and the $n$-the Derived Set
858
Is $\{\emptyset\}$ a subset of $\{\{\emptyset\}\}$?
16389
If $(a_n)\subset[0,\infty)$ is non-increasing and $\sum a_n<\infty$, then $\lim{n a_n} = 0$
13575
Need help for proving that: $f(f^{-1}(A)) ⊆ A$
81196
Is true that $H^{s,p}(\mathbb{R}^n)\subset C^k(\mathbb{R}^n)$ when $s-k>n/p$?.
113614
Approximating the density of $S\cap[a,b]$ using a Folner Sequence of $A$, where $S \subseteq A$?