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[AI summary] The text discusses various aspects of rotation matrices, including their definition, application in rotating vectors, eigenvalues and eigenvectors, and their relation to matrix exponentials. It also touches on algorithms like QR decomposition and the academic use of rotations to map vectors.
2.1 parsecs

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| | liorsinai.github.io

Introduction to quaternions and rotations in 3D.
2.5 parsecs

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| | liorsinai.github.io

[AI summary] This blog post explains the different methods for representing and performing rotations in 2D space, including polar coordinates, Cartesian matrices, and complex numbers, while also introducing the concept of quaternions for future 3D rotations.
1.8 parsecs

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| | jmanton.wordpress.com

The following hints atwhy the quintic equation cannot be solved using radicals. It follows the approach in the first part of Ian Stewart's book "Galois Theory". If time permits, a future post will summarise the approach in V. B. Alekseev's book "Abel's Theorem in Problems and Solutions". Another candidate is Klein's book "Lectures on the...
25.6 parsecs

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