When a person passes away, usually a notice indicating this, is added on their profiles, or names (papers, etc). For such users on the site, can the notice be implemented too? but having the prior approval from close relatives, of what's going to be added/implemented to the user profile, in order to do things properly.
This comes because a very valuable math.SE user, expert in topology, real analysis, metric spaces, etc., and that every time he helped, he did it kindly, Henno Brandsma, passed away on 6th march, 2022.
Clarification Regarding some of the comments, I need to clarify. By "memorial notice" I meant, something like a small cross symbol ✞ (like the one that can be seen here) or Remembering (facebook notice) or something like that. Adding more than this on his profile, well that's certainly not what I meant. Sorry for the confusion, English is my second language, and I came across the meaning of -memorial-, and that seemed fit for what I wanted to express.
Before editing the profile page, by the moderator, it would be better if you had the approval of the relatives.
My own suggestion
What I had in mind was something like:
Remembering with appreciation
Henno Brandsma ✞
The remembering part, would be outside the standard format of the profile page, as it is in the facebook format, and a distinct type of letter (say italic); and so also the cross, next to the name, but not within the same format of the name; in this way, also the name on his answers wouldn't had the cross symbol. Now, why the cross?, because that's how it's displayed here https://mensenlinq.nl/overlijdensberichten/henno-hendrik-sikke-brandsma-9275046/, in other words: this should be avowed.
And personally, I've seen also a cross symbol (or pretty close to a cross symbol), next to the name of the person, in academic works, indicating the death of such person.