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- from .cartan_type import CartanType
- def CartanMatrix(ct):
- """Access the Cartan matrix of a specific Lie algebra
- Examples
- ========
- >>> from sympy.liealgebras.cartan_matrix import CartanMatrix
- >>> CartanMatrix("A2")
- Matrix([
- [ 2, -1],
- [-1, 2]])
- >>> CartanMatrix(['C', 3])
- Matrix([
- [ 2, -1, 0],
- [-1, 2, -1],
- [ 0, -2, 2]])
- This method works by returning the Cartan matrix
- which corresponds to Cartan type t.
- """
- return CartanType(ct).cartan_matrix()
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