 is recessive)*** Suppose that for each $i\in I$, $A_i\in ML(n)\cap O(n,{\ensuremath{\mathbb R}})=ML(n)\cap SO(n,{\ensuremath{\mathbb R}})$. Then ${\ensuremath{\mathcal{R}({\bf A},{\boldsymbol \lambda})}}\in ML(n)\cap O(n,{\ensuremath{\mathbb R}})=ML(n)\cap SO(n,{\ensuremath{\mathbb R}})$. 