reflexive relation
binary relation over a set in which every element is related to itself
miscibility
ability of a pair of substances to dissolve in each other in any mixing ratio
total relation
binary endorelation such that for every pair of elements either first is related with second or second is related with first
tolerance relation
reflexive symmetric relation compatible with the operations of an algebraic structure
identity
relation each thing bears to itself alone
reflexive closure
operation on binary relations