code: def l2_square_prox(tensor, regularizer):
      """
      Proximal operator of (regularizer * ||.||_2^2) (squared l2 norm).
  
      Parameters
      ----------
      tensor : ndarray
      regularizer : float
  
      Returns
      -------
      ndarray
  
      References
      ----------
      .. [1]: Combettes, P. L., & Pesquet, J. C. (2011). Proximal splitting methods in signal processing.
              In Fixed-point algorithms for inverse problems in science and engineering (pp. 185-212).
              Springer, New York, NY.
      """
      return tensor / (1 + 2 * regularizer)
  
file_path: tensorly/tensorly/tenalg/proximal.py
imports: import tensorly
  import numpy
label_desc: Use image node_id 6 for calling a global function with example usage: l2_square_prox(tensor, regularizer) and returns: unknown