Erratum to: Errata

Erratum/errata

Errata to Model Categories

1. In the intro, I need to thank Georges Maltsiniotis for finding so many errors. Replace last paragraph of p. xii with the following: I would like to acknowledge the help of several people in the course of writing this book. I went from knowing very little about model categories to writing this book in the course of about two years. This would not have been possible without the patient help of...

Erratum to: Armentum: a hybrid direct search optimization methodology

In the original publication of this article unfortunately the co-authors were omitted. The two co-authors are displayed now.

Erratum

Errata to " an Introduction to Hyperplane Arrangements " List of Additional Errata and Questions -i

• page 2: You speak of the “usual dot product”, but there is no “usual dot product” on a general finite-dimensional K-vector space. If you want to work in this generality, you should use the dual space. (Or else just identify V with Kn for this definition, or require the choice of a nondegenerate symmetric bilinear form V × V → K which is to serve as a dot product. I personally find it easier t...