which are ture?

$1$The set of all languages is uncountably infinite.

$2$ Space complexity is measured in the number of cells on the tape that the Turing Machine will visit during computation.

$3$Rules for transforming one statement into another while preserving truth are referred to as rules of inference or deduction.

$4$For any transformation function on Turing Machines there will never exist a Turing Machine which would be unchanged by the transformation.