Friedlander–Mazur vanishing conjecture for Lawson homology

Let $X$ be a complex smooth projective variety of dimension $d$, and let $L_qH_n(X)$ denote its Lawson homology. Friedlander–Mazur conjecture. For every $q$, one has

$$L_qH_n(X)=0$$

for every $n>2d$. This vanishing is a consequence predicted by the generalized cycle-map conjectures in the high-degree range and concerns the disappearance of Lawson homology above the topological dimension bound. The source presents it as a conjecture due to E. Friedlander and B. Mazur.