Understanding Change of Basis Vector: What it is and How to Use It

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SUMMARY

The discussion focuses on the concept of change of basis vectors and their practical applications in mathematics and physics. Key uses include the diagonalization of matrices for solving linear differential equations and dimensionality reduction in statistics, where a new basis set is constructed to capture the majority of data variability in fewer dimensions. Understanding these applications is crucial for effectively utilizing change of basis vectors in various analytical contexts.

PREREQUISITES
  • Linear algebra concepts, specifically matrix diagonalization
  • Understanding of linear differential equations
  • Familiarity with statistical dimensionality reduction techniques
  • Knowledge of basis vectors and vector spaces
NEXT STEPS
  • Study matrix diagonalization techniques in linear algebra
  • Explore linear differential equations and their solutions
  • Learn about Principal Component Analysis (PCA) for dimensionality reduction
  • Investigate the properties of vector spaces and basis transformations
USEFUL FOR

This discussion is beneficial for students and professionals in mathematics, physics, and data science who are looking to deepen their understanding of change of basis vectors and their applications in various fields.

shounakbhatta
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Hello,

I am doing calculation on change of basis vector.

But I am unable to understand why we do it. I mean to say what is the use of it and where in physics or maths it is used.

Can anybody please explain it?
 
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shounakbhatta said:
Hello,

I am doing calculation on change of basis vector.

But I am unable to understand why we do it. I mean to say what is the use of it and where in physics or maths it is used.

Can anybody please explain it?

Changing the basis has several applications, including the diagonalization of matrices, which can be used to solve systems of linear differential equations.
 
It's also used very frequently in statistics; given a high dimensional data set, we can construct a new basis set so that most of the variability in the data lies within a few dimensions, allowing us to reduce the dimension of the data without substantially reducing its information content.
 

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