Question about the paper

[salykova]

Hi! Thank you for such interesting work and for sharing it! May I ask you a question about the paper: is it any special meaning behind d? or it is just a typo and d=n always. Because I expected P to be of dimension k x N^n = k x N x N x ... x N

[hbb1]

Yes! it is a typo: $d$ should be $n$. Thank you for pointing it out.

[salykova]

Thanks!