Homology of quotient space of $S^2$ under the identifications $x \sim -x$ for $X$ in the equator $S^1$.
88625
Homology of $S^2/x\sim -x$ for $x$ on the equator
29359
Localisation isomorphic to a quotient of polynomial ring
52556
Isomorphism of $S^1$.
101363
Computing Homology using Mayer-Vietoris
98818
Quotient ring of a localization of a ring
122581
Prove or disprove that $G_1/H_1 \cong G_2/H_2$
94215
Fundamental group of the connected sum of manifolds
6227
Showing diffeomorphism between $S^1 \subset \mathbb{R}^2$ and $\mathbb{RP}^1$
127365
Question on showing a bijection between $\pi_1(X,x_0)$ and $[S^1, X]$ when X is path connected.
82814
Homework question on whether two quotient spaces are homeomorphic
93471
Space of homeomorphisms Homeo$(S^1)$ of $S^1$ deformation retracts onto $O(2)$
143140
When are quotients of homeomorphic spaces homeomorphic?
110167
A conjecture with connection to the $abc$-conjecture
158156
Finding the dual basis for the space of polynomials of degree $\leq$ 2
30401
Determining the structure of the quotient ring $\mathbb{Z}[x]/(x^2+3,p)$
64993
Connectedness of the $S^2$ sphere
18034
Is there an equivalence relation of which the quotient topology is homeomorphic to codomain of a quotient map?