from typing_extensions import Self

from sympy.core.add import Add
from sympy.matrices.expressions.matexpr import MatrixExpr
from sympy.matrices.expressions.special import GenericZeroMatrix

class MatAdd(MatrixExpr, Add):
    is_MatAdd = ...
    identity = ...
    def __new__(cls, *args, evaluate=..., check=..., _sympify=...) -> GenericZeroMatrix | MatAdd | Self: ...
    @property
    def shape(self): ...
    def could_extract_minus_sign(self) -> bool: ...
    def expand(self, **kwargs) -> MatAdd: ...
    def doit(self, **hints) -> MatAdd: ...

factor_of = ...
matrix_of = ...

def combine(cnt, mat): ...
def merge_explicit(matadd) -> MatAdd: ...

rules = ...
canonicalize = ...