New posts in 3 Manifolds

Why does not a closed 3-manifold modelled on SL(2,R) admit a metric of nonpositive curvature?

Higher homotopy groups of irreducible 3-manifolds

Regular or h-regular CW-complex structure for the Poincaré homology sphere

Quantitative word problem for 3-manifold groups

$0$-surgeries on trefoil and figure-eight

Toroidal Heegaard splittings

Negative surgeries on negative knots

Relating smooth concordance and homology cobordism via integral surgeries

Example of homeomorphism of $3$-manifolds

"Well-known fact" that every irreducible 3-manifold with non-empty boundary has an incompressible surface