4 problems

Proposed conjecture. For $n\equiv 6\pmod 8$ with $n\geq 14$,

Let $X$ be a space such that $H^*(X;\mathbb{Q})$ is finite-dimensional, and let … The rational Gottlieb elements of $X$ are the elements associated to the rational Gottlieb group o…

Let $X$ be a formal space with bigraded Sullivan minimal model $(\land V,d)$, where … and the differential satisfies $d(V_0)=0$ and $d(V_i)\subseteq (\land V)_{i-1}$ for $i\geq 1$.…

Let $X$ be a finite complex of dimension $q$, and let $G_n(X)_{{\mathbb Q}}=G_n(X)\otimes {\mathbb Q}$ denote its $n$-th rational Gottlieb group. Felix–Halperin's conjecture. … for…