Exclusion principle

Exclusion principle may refer to:

• Exclusion principle (philosophy), epistemological principle
• In economics, the exclusion principle states "the owner of a private good may exclude others from use unless they pay."; it excludes those who are unwilling or unable to pay for the private good, but does not apply to public goods that are known to be indivisible: such goods need only to be available to obtain their benefits rather than purchased
• Pauli exclusion principle, quantum mechanical principle
• In ecology, the competitive exclusion principle, sometimes referred to as Gause's law, is a proposition that two species which compete for the same limited resource cannot coexist at constant population values

See also

• Exclusionary rule, legal principle
• Inclusion–exclusion principle, in combinatorial mathematics