Gibbons - Algorithmic Graph Theory - New paperback or softback - X555z

Anthony - Computational Learning Theory - New paperback or softback - X555z

Payne - Reading Theory - New paperback or softback - X555z

Information Theory, Inference and Learning Algorithms by David MacKay

Bernico - Deep Learning Quick Reference - New paperback or softback - X555z

Varadarajan - Geometry of Quantum Theory - New paperback or softback - - X555z

Chaitin - Algorithmic Information Theory - New paperback or softback - X555z

Fiala - Combinatorial Algorithms - New paperback or softback - X555z