H
omological
A
lgebra
P
rogramming
List of HAP functions
Introduction to HAP
Algebraic definition of group cohomology
Topological view of group cohomology
Resolutions for extensions of groups
Functorial properties of cohomology
Second homotopy groups of presentations and a periodic resolution for a group not acting on a sphere
Aspherical presentations
Third homotopy groups of suspensions of classifying spaces
A relative Schur multiplier and the capability of groups
Resolutions for some infinite (Artin) groups
Cup product and integral cohomology rings
Cohomology with twisted coefficients
Piecing things together - a space group example
Explicit cocycles
Groups acting on polytopes
Computational performance of HAP
HAP main page