This is more complicated than a yes/no question. Rather than addressing your exact question about the post being "within the scope of the site", let me explain why the post would not be "well received on the site." In this case, the topic is "within scope," but the post itself is likely to be closed because it does not contain a specific question.
Implied questions aren't real questions. They except the person answering to assume certain aspects of the statement which may or may not be of relevance.
Implied questions are somewhat open-ended and do not focus on a single issue. They are hard to answer, because of the unspecific wording of the question.
If you were instead of stating:
I've been struggling to find a listing for the rules that determine the effective permissions of a user on a database object in SQL Server based on the GRANTs, REVOKEs, and DENYs, that are explicitely applied to the user or/and the roles they blong to.
Is there a way to produce a list of objects a user can access:
- based on the GRANT and DENY a user has received?
- based on the roles the user has been assigned to?
- based on the server roles the SQL Login has been assigned to?
...then you might possibly receive an answer.