Reflexive: for all a in S, (a, a) exists in R.

Symmetric: for all a, b in S, if (a, b) exists in R, then (b, a) exists in R.

Transitive: for all a, b, c in S, if (a, b) and (b, c) exist in R, then (a, c) exist in R. 7th EditionKenneth Rosen4,285 explanations

11th EditionSullivan2,978 explanations

3rd EditionDaniel K. Clegg, Joanne Lockwood, Richard D. Nation, Richard N. Aufmann4,865 explanations

3rd EditionDavid J. Hunter870 explanations