2 problems

Let $n$ be an integer with $n\geq 3$. Consider the filtered truncated polynomial ring … A filtered $\lambda$-ring structure is a filtered $\lambda$-ring structure on this ring, and…

Let $A$ be an $n+1$-category, let $\varphi:A\to nCAT'$ be a family of $n$-categories, and let $\psi:A^o\to nCAT'$ be a contravariant family. Their realization is denoted…