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MatrixKinda�
Kind for all matrices in SymPy.
Basic class for this kind is ``MatrixBase`` and ``MatrixExpr``,
but any expression representing the matrix can have this.
Parameters
==========
element_kind : Kind
Kind of the element. Default is
:class:`sympy.core.kind.NumberKind`,
which means that the matrix contains only numbers.
Examples
========
Any instance of matrix class has kind ``MatrixKind``:
>>> from sympy import MatrixSymbol
>>> A = MatrixSymbol('A', 2, 2)
>>> A.kind
MatrixKind(NumberKind)
An expression representing a matrix may not be an instance of
the Matrix class, but it will have kind ``MatrixKind``:
>>> from sympy import MatrixExpr, Integral
>>> from sympy.abc import x
>>> intM = Integral(A, x)
>>> isinstance(intM, MatrixExpr)
False
>>> intM.kind
MatrixKind(NumberKind)
Use ``isinstance()`` to check for ``MatrixKind`` without specifying the
element kind. Use ``is`` to check the kind including the element kind:
>>> from sympy import Matrix
>>> from sympy.core import NumberKind
>>> from sympy.matrices import MatrixKind
>>> M = Matrix([1, 2])
>>> isinstance(M.kind, MatrixKind)
True
>>> M.kind is MatrixKind(NumberKind)
True
See Also
========
sympy.core.kind.NumberKind
sympy.core.kind.UndefinedKind
sympy.core.containers.TupleKind
sympy.sets.sets.SetKind
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