[denvaar]

I also find Succinct Data Structures fascinating. I own Navarro's text book, and it's one of my favorite books to take to the coffee shop and try to understand. I also have a copy of Jacobson's Thesis.

Since information is rather scarce, here's my shameless plug for a related blog post I made, which includes a few links at the end to more resources https://denvaar.dev/posts/jacobsons_rank.html