I could not see $|H(\kappa)| > 2^{<\kappa}$.
It is a question in Kunen book. The other part is answered, this part may be clear but I could not see.
Also, $2^{<\kappa}$ is not clear for me. Is it a set of functions which from $\kappa$ to 2?
I could not see $|H(\kappa)| > 2^{<\kappa}$.
It is a question in Kunen book. The other part is answered, this part may be clear but I could not see.
Also, $2^{<\kappa}$ is not clear for me. Is it a set of functions which from $\kappa$ to 2?