Does $S^1 \times S^3$ admit a complex structure?
118288
Complex structure on $\mathbb S^1 \times \mathbb S^3$
101371
show that $f^{(3)}(c) \ge 3$ for $c\in(-1,1)$
94018
Homology groups of $\mathbb{R}^3\setminus \ S^1$ and $\mathbb{R}^3\setminus E^1_+$
11259
Prove $R\times S$ is not an integral domain
78624
CW complexes and manifolds
22959
Does every even-dimensional sphere admit an almost complex structure?
131519
intuition on the fundamental group of $S^1$
152701
A question on periodicity of complex functions
135980
Geometric interpretation of a complex set
76937
Is there an elementary way to see that there is only one complex manifold structure on $R^2$?
5250
Are $T\mathbb{S}^2$ and $\mathbb{S}^2 \times \mathbb{R}^2$ different?
6323
existence of complex structure in dimension 2
73690
If $\mathbb R^3\setminus V$ connected where $V$ is the subspace generated by $\{(1,1,1),(0,1,1)\} $
108325
What's the relationship between $SL(2,\mathbb{C})$, $SU(2)\times SU(2)$ and $SO(1,3)$?
88155
Show that $[0, 1)\times[0, 1)$ is homeomorphic to $[0, 1]\times[0, 1)$ but not to $[0, 1]\times[0, 1]$.
11089
For which complex $a,\,b,\,c$ does $(a^b)^c=a^{bc}$ hold?
148633
Description of varieties in $\mathbb{P}^2\times \mathbb{P}^1$