code: def cholesky(a):
      """Cholesky Decomposition
  
      Args:
          a (:class:`~chainer.Variable` or :ref:`ndarray`): Input variable.
  
      Returns:
          ~chainer.Variable: Output variable.
      """
      return Cholesky().apply((a,))[0]
  
file_path: chainer/chainer/functions/math/cholesky.py
imports: import chainer
  from chainer import function_node
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 1 for calling a global function with example usage: cholesky(a) and returns: Cholesky