；对合映射；对合变换- progressive set
- progressive wave
- pro-group
- prohibition
- prohomotopy
- project
- projecting
- projecting cone
- projecting cylinder
- projecting figure
- projecting line
- projecting model
- projecting plane
- projecting technique
- projection
- projection band
- projection chain map
- projection chart
- projection-complete subspace
- projection cone
- projection constant
- projection difference
- projection-difference method
- projection estimate
- projection formula