Results 201 to 210 of about 4,558 (244)
Some of the next articles are maybe not open access.
1971
In this chapter we shall apply the theory of derived functors to the important special case where the ground ring Λ is the group ring ℤ G of an abstract group G over the integers. This will lead us to a definition of cohomology groups H n (G, A) and homology groups H n (G, B), n ≧ 0, where A is a left and B a right G-module (we speak of “G-modules ...
Peter J. Hilton, Urs Stammbach
openaire +1 more source
In this chapter we shall apply the theory of derived functors to the important special case where the ground ring Λ is the group ring ℤ G of an abstract group G over the integers. This will lead us to a definition of cohomology groups H n (G, A) and homology groups H n (G, B), n ≧ 0, where A is a left and B a right G-module (we speak of “G-modules ...
Peter J. Hilton, Urs Stammbach
openaire +1 more source
2019
AbstractThis chapter introduces the basic ingredients of the cohomology of groups and describes datatypes and algorithms for implementing them on a computer. These are illustrated using computer examples involving: integral homology of finite groups such as the Mathieu groups, homology of crystallographic groups, homology of nilpotent groups, homology ...
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AbstractThis chapter introduces the basic ingredients of the cohomology of groups and describes datatypes and algorithms for implementing them on a computer. These are illustrated using computer examples involving: integral homology of finite groups such as the Mathieu groups, homology of crystallographic groups, homology of nilpotent groups, homology ...
openaire +1 more source
Cancer statistics for adolescents and young adults, 2020
Ca-A Cancer Journal for Clinicians, 2020Kimberly D Miller +2 more
exaly
ON THE COHOMOLOGY GROUPS OF A FINITE GROUP
The Quarterly Journal of Mathematics, 1955openaire +2 more sources
Breast cancer statistics, 2017, racial disparity in mortality by state
Ca-A Cancer Journal for Clinicians, 2017Carol E Desantis +2 more
exaly