2 problems

Let $(\Omega,\varrho)$ be a domain and boundary parameter for the problem … lambda(Omega,varrho)=f'(0), … has no positive bounded solution. This extends the established conclusion…

Hausdorff-measure lower-bound conjecture. There exists a constant $C>0$, depending on $n$, $k$, $hR$, and an upper bound for $\mathscr{H}^k(E)$, such that