- In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set.
- E. C. Manning Provincial Park (Wikipedia)
E.C. Manning Provincial Park is a provincial park in British Columbia, Canada. It is usually referred to as Manning Park, although that nomenclature is also used to refer to the resort and ski area at the park’s core. The park covers 83,671 hectares (323 mi2) and was the second most visited provincial park in 2017-18 after Cypress Provincial Park. The park lies along British Columbia Highway 3, and occupies a large amount of land between Hope and Princeton along the Canada-United States border.