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- from sympy.liealgebras.cartan_matrix import CartanMatrix
- from sympy.matrices import Matrix
- def test_CartanMatrix():
- c = CartanMatrix("A3")
- m = Matrix(3, 3, [2, -1, 0, -1, 2, -1, 0, -1, 2])
- assert c == m
- a = CartanMatrix(["G",2])
- mt = Matrix(2, 2, [2, -1, -3, 2])
- assert a == mt
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