nullity

English

Etymology

From Middle French nullité and its etymon Medieval Latin nūllitās, from Latin nūllus. By surface analysis, null +‎ -ity.

Pronunciation

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Noun

nullity (countable and uncountable, plural nullities)

1. The state of being null, or void, or invalid.

   nullity of marriage

2. (law) A void act; a defective proceeding or one expressly declared by statute to be a nullity.
3. (mathematics) The dimension of the kernel of a linear transformation; the dimension of the nullspace of a matrix.

Derived terms

• decree of nullity
• rank-nullity theorem

Translations

the state of being null, or void, or invalid

• Bulgarian: невалидност (bg) f (nevalidnost)
• French: nullité (fr) f
• Hungarian: semmisség (hu), érvénytelenség (hu)

the dimension of the nullspace of a matrix

• Hungarian: nullitás (hu)