Abstract:
We study the lattices $\Omega K_{n}$ and $K_{n}$ of all $n$-multiply
$\Omega$-canonical and $n$-multiply canonical formations respectively.
The main results of the paper are the proofs of
$\mathfrak G$-separability of the lattice $\Omega K_n$ and coincidence of the systems of
identities of the lattices $K_{n}$ and $K_{m}$ for different positive integers
$n$ and $m$.