Newbetuts
.
New posts in group-cohomology
Showing that the Hopf fibration is a non-trivial fibre bundle
differential-geometry
fiber-bundles
group-cohomology
hopf-fibration
obstruction-theory
Can we see directly from the cocycle condition that 2-cocycles are symmetric?
group-theory
finite-groups
homological-algebra
homology-cohomology
group-cohomology
Computing Group Extension and $2$-cocycle in GAP
group-cohomology
gap
group-extensions
How do you compute group cohomology in practice?
group-theory
big-list
homology-cohomology
computer-algebra-systems
group-cohomology
When is $\mathbb{Z}$ a flat $\mathbb{Z}G$-module?
group-theory
commutative-algebra
group-cohomology
Motivation for the relations defining $H^1(G,A)$ for non-commutative cohomology
group-cohomology
motivation
galois-cohomology
Group cohomology of finite groups
finite-groups
group-cohomology
Cohomology of $SL_2(\mathbb Z)$ acting on rational functions
group-theory
number-theory
group-cohomology
Non-Isomorphic Group Extensions
abstract-algebra
group-cohomology
group-extensions
Reference request: Introduction to Finite Group Cohomology
group-theory
reference-request
finite-groups
group-cohomology
motivation
Is there an interpretation of higher cohomology groups in terms of group extensions?
group-theory
modules
homological-algebra
group-cohomology
Applications of group cohomology to algebra
group-cohomology
Why are cochains in group cohomology exact as a functor of the coefficients?
abstract-algebra
number-theory
category-theory
homological-algebra
group-cohomology
What is the significance of the $\mathbb Z_2 \times \mathbb Z_2$ subgroup of $SO(3)$?
group-theory
lie-groups
lie-algebras
group-cohomology
Computing homology/cohomology of unit tangent bundle
general-topology
algebraic-topology
homology-cohomology
group-cohomology
Calculating the group co-homology of the symmetric group $S_3$ with integer coefficients.
group-theory
finite-groups
group-cohomology
Motivation behind the ingredients of First Cohomology group $H^1$
modules
intuition
homological-algebra
group-cohomology
motivation
Finite groups with periodic cohomology
abstract-algebra
homology-cohomology
group-cohomology
Are There Always More Conjugacy Classes in the Kernel of a Morphism to $\Bbb Z_2$ than Not?
abstract-algebra
combinatorics
group-theory
finite-groups
group-cohomology
What is the motivation for defining both homogeneous and inhomogeneous cochains?
terminology
homology-cohomology
group-cohomology
Prev
Next