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Št. zadetkov: 2
Homotopy classification of PD[sub]4-complexes relative an order relation
Friedrich Hegenbarth, Mehmetcik Pamuk, Dušan Repovš
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Oznake: minimal ▫$PD_4$▫-complex;order relation;symmetric L-group;
We define an order relation among oriented ▫$PD_4$▫-complexes. We show that with respect to this relation, two ▫$PD_4$▫-complexes over the same complex are homotopy equivalent if and only if there is an isometry between the second homology groups. We also consider minimal objects of this relation.
Leto: 2015 Vir: Fakulteta za matematiko in fiziko (UL FMF)
s-Cobordism classification of 4-manifolds through the group of homotopy self-equivalences
Friedrich Hegenbarth, Mehmetcik Pamuk, Dušan Repovš
Izvirni znanstveni članek
Oznake: s-cobordism;4-manifold;cohomological dimension;homotopy self-equivalence;
The aim of this paper is to give an ▫$s$▫-cobordism classification of topological 4 manifolds in terms of the standard invariants using the group of homotopy self-equivalences. Hambleton and Kreck constructed a braid to study the group of homotopy self-equivalences of 4-manifolds. Using this braid t ...
Leto: 2015 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 2
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