I will be posting this to the physics stack since this is a physics paper, but I figured the mathematicians would be able to suggest more comprehensive references for me.
My future adviser just published a beautiful paper, https://arxiv.org/pdf/1904.08304.pdf, and I am looking for some references/textbooks to look into the following concepts:
- Lie algebra (central) extensions
- Poincaré algebra
- Galilean algebra
- Maurer–Cartan forms
Thank you! Cheers