plural of simple ring

(algebra, ring theory) A ring that contains no nontrivial ideals (i.e., no (two-sided) ideals other than the zero ideal and the ring itself).

plural of simple algebra

(algebra) An algebra that contains no nontrivial proper (two-sided) ideals and whose multiplication operation is not zero (i.e., there exist a and b such that ab ≠ 0).

plural of simple fracture

(medicine) A fracture where the bone only is divided.

plural of past simple

(algebra, field theory) A field extension obtained by adjoining a single element to a given field.

(algebra) A root of a polynomial equation which has multiplicity one.

(grammar) In English, the tense of a verb which is used specifically in the simple aspect--that is, the verb alone does not indicate whether the action is complete or habitual--and is usually used independently of any auxiliary verbs, with the known exceptions of 'will', 'shall', and 'would'.