SemiBase

A certified basis of 18 identities

This list of identities is a basis, proved in Lean, of 2 semigroups of order six, all of which generate the variety V[10950]. Removing the identities that follow from the others leaves 3 identities (Vampire); the variety page shows the shortest known basis.

Identifier sb-37f6bb57596d0032 in the data of the bases-min seal.

Certified for

The identities

  1. x² ≈ x⁴
  2. x³yx ≈ xyx
  3. x²yx ≈ xyx²
  4. x²yx² ≈ xyx
  5. x²y² ≈ xyxy
  6. x²y² ≈ xy²x
  7. x²y³ ≈ xyx
  8. xyx ≈ xyx³
  9. xyx ≈ xyxy²
  10. xyx ≈ xy²xy
  11. xyx ≈ xy³x
  12. x²yzx ≈ xyxzx
  13. x²yzy ≈ xyxzy
  14. x²yzy ≈ xy²zx
  15. x²yzy ≈ xyzxy
  16. x²yzy ≈ xyzyx
  17. xyxz² ≈ xyzxz
  18. xyxz² ≈ xyz²x