May a person make a vow and deliberately not fulfill it in the hope that his spouse will die?

This source-based Torah study examines: May a person make a vow and deliberately not fulfill it in the hope that his spouse will die? It follows the canonical Hebrew discussion and the classical sources cited there, preserving the distinctions and review status of the original. This localized layer is for study and discovery only; it is not practical halakhic, legal, military, medical, safety or pastoral advice.