I will describe several ways of measuring homology growth, and their connections to $L^{2}$-homology and local homology with coefficients in skew fields. I will also discuss some properties of the resulting invariants and some open problems.
Partially based on a joint work with Grigori Avramidi(MPIM) and Kevin Schreve(LSU).
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/node/3444
[3] https://www.mpim-bonn.mpg.de/HOGRO2024