- perfect cube expression
- perfect cube number
- perfect cycle
- perfect delay convention
- perfect field
- perfect field
- perfect graph
- 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