I think the author means discrete when they say finite. In that case, they mean Doubly special relativity. https://en.m.wikipedia.org/wiki/Doubly_special_relati

I think the author means discrete when they say finite. In that case, they mean Doubly special relativity. https://en.m.wikipedia.org/wiki/Doubly_special_relativity https://en.m.wikipedia.org/wiki/Doubly_special_relativity Doubly special relativity - Wikipedia