On 2023-06-10 05:54, Tom Goldring wrote:
To get the symbol "aleph null" typically used to denote the cardinality
of the set of natural numbers, I can simply type the eight keystrokes
\aleph_0 and it will show up in LyX correctly.
Now suppose I want the set whose members are all countable subse
To get the symbol "aleph null" typically used to denote the cardinality
of the set of natural numbers, I can simply type the eight keystrokes
\aleph_0 and it will show up in LyX correctly.
Now suppose I want the set whose members are all countable subsets of
the real numbers. This is typically
