Compute homology groups of space $\Bbb RP^2$ attached with Mobius band using Mayer Vietories
101363
Computing Homology using Mayer-Vietoris
88616
Retraction of the Möbius strip to its boundary
151581
Prerequisite for Milnor Topology from a Differential Viewpoint
126930
Finding all group homomorphisms of $S_n\to\mathbb{C}^*$ and $A_n\to\mathbb{C}^*$
83872
Isomorphisms for graphs with loops and multiple edges
3201
Landau & Lifshitz's Approach (contour method) on the WKB connection formulas
128941
How to compute the topological space of fibered product of schemes?
85713
Showing Parallelism is an equivalence relation in $\Bbb R ^2$
99382
What is needed to make Euclidean spaces isomorphic as groups?
153092
Homology of disjoint union is direct sum of homologies
95187
The set of homotopy classes
122410
Can one build a homology theory using submanifolds and their boundaries?
27652
metric on the Euclidean Group
72560
Eigenspace of the companion matrix of a monic polynomial
99353
Topology on cartesian product and product topology.
90778
Faithful representation of the Heisenberg group
61226
Group Structure on $\Bbb R$