corank

English

Etymology

From co- +‎ rank.

Noun

corank (plural coranks)

1. (mathematics) The dimension of the left nullspace of a matrix.
2. (mathematics) The dimension of the cokernel of a linear transformation of a vector space
3. (mathematics) The number of elements of a matroid minus its rank.
   • 1995, William M. Kantor, Lino Di Martino, Groups of Lie Type and their Geometries, page 117:

     First of all, we can see that coranks are the same for the elements of a conjugacy class.

Synonyms

• nullity