Index theorems and domain wallsThe Atiyah-Patodi-Singer (APS) index
theorem relates the index of a Dirac operator to an integral
Kochen-Specker Theorem in Krein Space© 2014, Springer Science+Business Media New York. The well known Kochen-Specker’s
theorem (Kochen
The Perron-Frobenius theorem - A proof with the use of Markov chainsThe Perron-Frobenius
theorem for an irreducible nonnegative matrix is proved using the matrix graph
The Hankel matrix rank theorem revisited© 2017 Elsevier Inc. We give a new short proof of a version of a Hankel matrix rank
theorem