+"Well-order" describes a [set](/wiki/set) whose elements are arranged such that every non-empty subset possesses a distinct least element. This unique structure guarantees a "first" item can always be identified within any selection, making it fundamental in [order theory](/wiki/order_theory).
+## See also
+- [Total Order](/wiki/total_order)
+- [Set Theory](/wiki/set_theory)
+- [Least Element](/wiki/least_element)
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