A subset can have equal cardinality as the set it is a subset of, if the set is infinite. I don't think that subjectivity can be reduced to math, but reducing

A subset can have equal cardinality as the set it is a subset of, if the set is infinite. I don't think that subjectivity can be reduced to math, but reducing math to subjectivity doesn't obviously imply that subjectivity cannot be reduced to math, as far as I can see right now.