Cardinal characteristics of the continuum

Definition

Let $\omega^\omega$ be the set of functions from $\N$ to $\N$. For $f, g \in \omega^\omega$, write $f \le^* g$ if $f(n) \le g(n)$ for all but finitely many $n$. Let $\mathcal{M}$ be the family of meagre subsets of $\R$. A cardinal characteristic of the continuum is an uncountable cardinal $\kappa \le 2^{\aleph_0}$ of the following kind. It is the least size of a family of reals, or of sets of reals, with a given property. The standard examples include:

1. The bounding number $\mathfrak{b}$ is the least size of a set $F \subseteq \omega^\omega$ with no $g$ such that $f \le^* g$ for all $f \in F$.
2. The dominating number $\mathfrak{d}$ is the least size of a set $F \subseteq \omega^\omega$ such that each $g \in \omega^\omega$ has $g \le^* f$ for some $f \in F$.
3. The additivity $\operatorname{add}(\mathcal{M})$ is the least size of a subfamily of $\mathcal{M}$ whose union is not meagre.
4. The covering number $\operatorname{cov}(\mathcal{M})$ is the least size of a subfamily of $\mathcal{M}$ whose union is $\R$.
5. The uniformity $\operatorname{non}(\mathcal{M})$ is the least size of a subset of $\R$ that is not meagre.