4-manifolds;
equivalence relations;
SIMPLY-CONNECTED;
4-MANIFOLDS;
SURGERY OBSTRUCTION GROUPS;
STABLE-HOMOTOPY GROUPS;
NONORIENTABLE;
FUNDAMENTAL GROUP;
GAUGE-THEORY;
CLASSIFICATION;
TORSION;
COMPLEXES;
MANIFOLDS;
D O I:
10.4171/EMSS/56
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We illustrate the rich landscape of 4-manifold topology through the lens of counterexamples. We consider several of the most commonly studied equivalence relations on 4-manifolds and how they are related to one another. We explain implications e.g. that h-cobordant manifolds are stably homeomorphic, and we provide examples illustrating the failure of other potential implications. The information is conveniently organised in a flowchart and a table.