Definition 17.10.85.F06EA26AA808 Let $\ell ,\ell '\in \mathcal{R}^{\infty }(X,\theta ;\phi )$. We define $\ell \lor \ell '$ as the minimal ray in $\mathcal{R}^{\infty }(X,\theta ;\phi )$ lying above both $\ell $ and $\ell '$.
F06EA26AA808Definition 17.10.85.F06EA26AA808 Let $\ell ,\ell '\in \mathcal{R}^{\infty }(X,\theta ;\phi )$. We define $\ell \lor \ell '$ as the minimal ray in $\mathcal{R}^{\infty }(X,\theta ;\phi )$ lying above both $\ell $ and $\ell '$.
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