@lowrankjack
We are currently considering our options. Some of the editors have voiced the opinion that it would be nice to start a similar journal elsewhere.
@neuralreckoning@neuromatch.social
They have since clarified that the ban is not permanent, but only the first few papers will have to be published first. Also, they announced that some changes to the submission system are coming. They didn't give all the details, but it sounded like more approval from coauthors.
@julesh@mathstodon.xyz
To answer one of your questions, namely whether the power set function is injective (in the sense of cardinality): This depends on your axioms for set theory. Under the generalised continuum hypothesis it holds, without it, there are counterexamples, see
https://mathoverflow.net/q/67473/15887