feat: rigorous physics revision for Paper 1 based on adversarial review

venv/lib/python3.12/site-packages/numpy/matrixlib/__init__.py

@@ -0,0 +1,12 @@
+"""Sub-package containing the matrix class and related functions.
+
+"""
+from . import defmatrix
+from .defmatrix import *
+
+__all__ = defmatrix.__all__
+
+from numpy._pytesttester import PytestTester
+
+test = PytestTester(__name__)
+del PytestTester