Reciprocity theorem
- Artin reciprocity
- Betti's theorem
- Cubic reciprocity
- Dedekind sums
- Frobenius reciprocity theorem
- Quadratic reciprocity
- Quartic reciprocity
- Reciprocity (disambiguation)
- Reciprocity (electrical networks)
- Reciprocity (electromagnetism)
- Reciprocity (engineering)
- Stanley's reciprocity theorem
- Tellegen's theorem
- Triple product rule
- Weil reciprocity for algebraic curves