Several facts about Theodor Wittstein, Gaetano Balducci, and some expressions of the net single premiums under their mortality assumption

Andrius Grigutis, Eglė Matulevičiūtė, Mindaugas Venckevičius

The mathematical essence in life insurance spins around the search of the nu\-me\-ri\-cal characteristics of the random variables $T_x$, $\hat{I}{½}^{T_x}$, $T_x\hat{I}{½}^{T_x}$, etc., where $\hat{I}½$…