1 “...This book celebrates the 80 years of the Professor Eugene P. Wigner paper "On Unitary...”

2 Subjects: “...unitary vicinity of exceptional points...”

3 Subjects: “...projective special unitary group...”

4 Subjects: “...Gaussian unitary operations...”

5 “... single network. In practice, its governance is neither centralised nor unitary; it is piecemeal...”