Initialisation du repository de Beta

venv/lib/python3.12/site-packages/sympy/liealgebras/cartan_matrix.py

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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()