👉 In mathematics, a testator is a person who creates or authorizes an individual to create a will. They are typically the legal representative of an estate in which they have power and authority over the distribution of assets. Testators can be individuals, such as a spouse, guardian, or executors, or legal entities, such as a corporation or partnership. Their role is to appoint someone else to act on their behalf when they die, often after death but before the will's execution by probate