# RectangularMatrixCategory(m, n, R, Row, Col)¶

RectangularMatrixCategory is a category of matrices of fixed dimensions. The dimensions of the matrix will be parameters of the domain. Domains in this category will be R-modules and will be non-mutable.

0: %
from AbelianMonoid
#: % -> NonNegativeInteger
from Aggregate
*: (%, R) -> %
from RightModule R
*: (Integer, %) -> % if R has AbelianGroup
from AbelianGroup
*: (NonNegativeInteger, %) -> %
from AbelianMonoid
*: (PositiveInteger, %) -> %
from AbelianSemiGroup
*: (R, %) -> %
from LeftModule R
+: (%, %) -> %
from AbelianSemiGroup
-: % -> % if R has AbelianGroup
from AbelianGroup
-: (%, %) -> % if R has AbelianGroup
from AbelianGroup
/: (%, R) -> % if R has Field
m/r divides the elements of m by r. Error: if r = 0.
=: (%, %) -> Boolean
from BasicType
~=: (%, %) -> Boolean
from BasicType
antisymmetric?: % -> Boolean
antisymmetric?(m) returns true if the matrix m is square and antisymmetric (i.e. m[i, j] = -m[j, i] for all i and j) and false otherwise.
any?: (R -> Boolean, %) -> Boolean
from HomogeneousAggregate R
coerce: % -> OutputForm
from CoercibleTo OutputForm
column: (%, Integer) -> Col
column(m, j) returns the jth column of the matrix m. Error: if the index outside the proper range.
columnSpace: % -> List Col if R has EuclideanDomain
columnSpace(m) returns a sublist of columns of the matrix m forming a basis of its column space.
convert: % -> InputForm if R has Finite
from ConvertibleTo InputForm
copy: % -> %
from Aggregate
count: (R -> Boolean, %) -> NonNegativeInteger
from HomogeneousAggregate R
count: (R, %) -> NonNegativeInteger
from HomogeneousAggregate R
diagonal?: % -> Boolean
diagonal?(m) returns true if the matrix m is square and diagonal (i.e. all entries of m not on the diagonal are zero) and false otherwise.
elt: (%, Integer, Integer) -> R
elt(m, i, j) returns the element in the ith row and jth column of the matrix m. Error: if indices are outside the proper ranges.
elt: (%, Integer, Integer, R) -> R
elt(m, i, j, r) returns the element in the ith row and jth column of the matrix m, if m has an ith row and a jth column, and returns r otherwise.
empty: () -> %
from Aggregate
empty?: % -> Boolean
from Aggregate
enumerate: () -> List % if R has Finite
from Finite
eq?: (%, %) -> Boolean
from Aggregate
eval: (%, Equation R) -> % if R has Evalable R
from Evalable R
eval: (%, List Equation R) -> % if R has Evalable R
from Evalable R
eval: (%, List R, List R) -> % if R has Evalable R
from InnerEvalable(R, R)
eval: (%, R, R) -> % if R has Evalable R
from InnerEvalable(R, R)
every?: (R -> Boolean, %) -> Boolean
from HomogeneousAggregate R
exquo: (%, R) -> Union(%, failed) if R has IntegralDomain
exquo(m, r) computes the exact quotient of the elements of m by r, returning "failed" if this is not possible.
hash: % -> SingleInteger
from SetCategory
hashUpdate!: (HashState, %) -> HashState
from SetCategory
index: PositiveInteger -> % if R has Finite
from Finite
latex: % -> String
from SetCategory
less?: (%, NonNegativeInteger) -> Boolean
from Aggregate
listOfLists: % -> List List R
listOfLists(m) returns the rows of the matrix m as a list of lists.
lookup: % -> PositiveInteger if R has Finite
from Finite
map!: (R -> R, %) -> % if % has shallowlyMutable
from HomogeneousAggregate R
map: ((R, R) -> R, %, %) -> %
map(f, a, b) returns c, where c is such that c(i, j) = f(a(i, j), b(i, j)) for all i, j.
map: (R -> R, %) -> %
map(f, a) returns b, where b(i, j) = a(i, j) for all i, j.
matrix: List List R -> %
matrix(l) converts the list of lists l to a matrix, where the list of lists is viewed as a list of the rows of the matrix.
maxColIndex: % -> Integer
maxColIndex(m) returns the index of the ‘last’ column of the matrix m.
maxRowIndex: % -> Integer
maxRowIndex(m) returns the index of the ‘last’ row of the matrix m.
member?: (R, %) -> Boolean
from HomogeneousAggregate R
members: % -> List R
from HomogeneousAggregate R
minColIndex: % -> Integer
minColIndex(m) returns the index of the ‘first’ column of the matrix m.
minRowIndex: % -> Integer
minRowIndex(m) returns the index of the ‘first’ row of the matrix m.
more?: (%, NonNegativeInteger) -> Boolean
from Aggregate
ncols: % -> NonNegativeInteger
ncols(m) returns the number of columns in the matrix m.
nrows: % -> NonNegativeInteger
nrows(m) returns the number of rows in the matrix m.
nullity: % -> NonNegativeInteger if R has IntegralDomain
nullity(m) returns the nullity of the matrix m. This is the dimension of the null space of the matrix m.
nullSpace: % -> List Col if R has IntegralDomain
nullSpace(m)+ returns a basis for the null space of the matrix m.
opposite?: (%, %) -> Boolean
from AbelianMonoid
parts: % -> List R
from HomogeneousAggregate R
qelt: (%, Integer, Integer) -> R
qelt(m, i, j) returns the element in the ith row and jth column of the matrix m. Note: there is NO error check to determine if indices are in the proper ranges.
random: () -> % if R has Finite
from Finite
rank: % -> NonNegativeInteger if R has IntegralDomain
rank(m) returns the rank of the matrix m.
row: (%, Integer) -> Row
row(m, i) returns the ith row of the matrix m. Error: if the index is outside the proper range.
rowEchelon: % -> % if R has EuclideanDomain
rowEchelon(m) returns the row echelon form of the matrix m.
sample: %
from Aggregate
size: () -> NonNegativeInteger if R has Finite
from Finite
size?: (%, NonNegativeInteger) -> Boolean
from Aggregate
smaller?: (%, %) -> Boolean if R has Finite
from Comparable
square?: % -> Boolean
square?(m) returns true if m is a square matrix (i.e. if m has the same number of rows as columns) and false otherwise.
subtractIfCan: (%, %) -> Union(%, failed) if R has AbelianGroup
from CancellationAbelianMonoid
symmetric?: % -> Boolean
symmetric?(m) returns true if the matrix m is square and symmetric (i.e. m[i, j] = m[j, i] for all i and j) and false otherwise.
zero?: % -> Boolean
from AbelianMonoid

AbelianGroup if R has AbelianGroup

AbelianMonoid

AbelianSemiGroup

Aggregate

BasicType

BiModule(R, R)

Comparable if R has Finite

ConvertibleTo InputForm if R has Finite

Evalable R if R has Evalable R

Finite if R has Finite

finiteAggregate

InnerEvalable(R, R) if R has Evalable R

Module R if R has CommutativeRing

SetCategory