When reading a book, I saw a script "I" (capital i) of a font that I haven't been able to identify. It looks like this:
Does anyone have an idea what font this is? I would like to use this letter when writing relational algebra.
I've searched for it, including by going through this thread, but haven't had any luck.
In case someone is wondering, I found it p. 260 of the book Fundamentals of Database Systems (7th ed.) by Elmasri and Navathe.
Thanks!

\frak{}? – Sigur Sep 29 '23 at 18:05\frak, it looks a bit similar, but that's not the one – Ileska Sep 29 '23 at 18:17