A ring where multiplication is commutative and there is always an inverse.
A field can be seen as an Abelian group that has two group operations: addition and multiplication, and they are compatible (distributive property).
Basically the nicest, least restrictive, 2-operation type of algebra.
Examples:
- Ring | 276, 1k, 12
- Group | 0, 5k, 89
- Algebra | 0, 8k, 171
- Mathematics | 17, 28k, 633
- Ciro Santilli's Homepage | 262, 218k, 4k
- Bilinear map | 133
- Complex number | 67, 226, 4
- Division ring | 41
- General linear group | 91, 170, 1
- Isomorphism | 120
- Lagrangian density | 319
- Polynomial over a ring | 179
- Ring | 276, 1k, 12
- Underlying field of a vector space | 94