Resumen de The law of cosines for an n-dimensional simplex

Yiren Ding

• Using the divergence theorem technique of L. Eifler and N.H. Rhee, The n-dimensional Pythagorean Theorem via the Divergence Theorem (to appear: Amer. Math. Monthly), we extend the law of cosines for a triangle in a plane to an n-dimensional simplex in an n-dimensional space.