On the number of generators of powers of an ideal
We study the number of generators of ideals in regular rings and ask the question whether $μ(I)<μ(I^2)$ if $I$ is not a principal ideal, where $μ(J)$ denotes the number of generators of an ideal $J$. We provide lower bounds for the number of generators for the powers of an ideal and also show that the CM-type of $I^2$ is $\geq 3$ if $I$ is a monomial ideal of height $n$ in $K[x_1,\ldots,x_n]$ and $n\geq 3$.
math.AC↗