Presentation slides for the following two papers (currently available in the pdf format only).
(1) T. Watanabe, N. Masuda.
Enhancing the spectral gap of networks by node removal.
Physical Review E, 82, 046102 (2010).
(2) N. Masuda, T. Fujie, K. Murota.
Semidefinite programming for maximizing the spectral gap.
In: Complex Networks IV, Studies in Computational Intelligence, 476, 155-163 (2013).