+"Degenerate fermions" describes a quantum state where particles, like electrons, are so dense they fill all lowest [Energy levels](/wiki/Energy_level). This occurs because no two fermions can occupy the same quantum state, a rule known as the [Pauli principle](/wiki/Pauli_principle). This creates a unique pressure that resists further compression, even at absolute zero.
+## See also
+- [Fermion](/wiki/Fermion)
+- [Quantum mechanics](/wiki/Quantum_mechanics)
+- [Degeneracy pressure](/wiki/Degeneracy_pressure)
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