3 papers
q-fin.ST2026
How the interpolation of life tables affects the decomposition of life insurance surplus
Mintodê Nicodème Atchadé, Marcus C. Christiansen, Friedrich Hubalek +1
The surplus of a life insurance policy depends on both systematic changes in mortality risk and financial changes. We propose to decompose the surplus by the axiomatically justifie…
math.CA2025
On the supremum of a quotient of power sums
Stefan Gerhold, Friedrich Hubalek
We define a function of two real vectors by a certain homogeneous quotient involving power sums, and show that its supremum grows asymptotically linearly w.r.t. the dimension. From…
math.PR2025
Unparalleled instances of prolifickness, random walks, and square root boundaries
Stefan Gerhold, Friedrich Hubalek
We revisit the problem of influencing the sex ratio of a population by subjecting reproduction of each family to some stopping rule. As an easy consequence of the strong law of lar…