6:T202a,

Corollary 8.6. With $Y=LbB$ as above and $c\ne b$ : if $D_c(Y)$ is defined, write $L=ZcD_c(L)$ ; then $\lambda(ZcL)=L$ . If $D_c(Y)$ is undefined, then $\lambda(LccL)=L$ .

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