- perfect graph conjecture
- perfect group
- perfect hypergraph
- perfect information estimation methods
- perfect kernel
- perfectly normal space
- perfectly plastic behaviour
- perfect mapping
- perfect mapping
- perfect matching
- perfect matching
- perfect Mendelsohn design
- perfect module
- perfect module
- perfect number
- perfect number
- perfect number
- perfect partition
- perfect plastic impact
- perfect power
- perfect quotient
- perfect reconstruction condition for biorthonormal scaling sequences
- perfect reconstruction condition for scaling sequence
- perfect rectangle
- perfect representation of a Boolean algebra