Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I've come across phrases like this a couple of times where でいる is used right after a noun instead of the usual Te-form verb + いる:
In this case is it basically just the same as である?
いる means to stay and で いる means to remain something or to keep being something.
It's different from である in the point that でいる implies that one is in that state for a certain period of time and no longer so when it's expired.
Required, but never shown