- α-limit point
- α limit set
- α-l-injective f-module
- α-l内射f模
- α-major rule
- α-mutual energy
- α-outer capacity
- α-permutation graph
- α-polar set
- α-potential
- α-pseudo-orbit
- α-recursion theory
- α-recursive function
- α-recursively enumerable set
- α-recursive set
- α-regular filter
- α-regular point
- α-resolvable block design
- α-sequence
- α-set
- α-stably coherenting
- α-superharmonic function
- α,T)-chain
- α-th derived set
- α-thinness