Matrix representation of a group

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SUMMARY

The discussion centers on the challenge of generalizing matrix representations for groups such as D3 and D4. The user expresses familiarity with 2x2 matrices but seeks guidance on constructing 3x3 matrices to illustrate rotation and reflection. A referenced paper provides an accessible treatment of group representations, specifically using the symmetric group S3 as an example. This highlights the importance of understanding group theory in the context of matrix representation.

PREREQUISITES
  • Understanding of group theory concepts, specifically D3 and D4 groups.
  • Familiarity with matrix operations, particularly 2x2 and 3x3 matrices.
  • Knowledge of the symmetric group S3 and its properties.
  • Basic comprehension of linear algebra principles.
NEXT STEPS
  • Research the properties and applications of D3 and D4 groups in matrix representation.
  • Study the paper on S3 group representations for deeper insights into matrix applications.
  • Explore advanced linear algebra techniques for constructing higher-dimensional matrices.
  • Learn about the geometric interpretations of rotation and reflection in 3D space.
USEFUL FOR

Mathematicians, students of abstract algebra, and anyone interested in the application of group theory to matrix representations.

VINAYBAR
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I am unable to grasp how to generalise the concept of matrix representation for a group say like D3 or D4.I know how to manipulate the 2x2 matrix,but how do I obtain a group in say a 3x3 matrix to show rotation and reflection?
 
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This paper has a very accessible treatment of groups and their representations as matrices. The author uses the group S3 as an example.
http://arxiv.org/abs/0810.3328"
 
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