Errata and Opinion to:

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...

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...

Errata to " Hyperplane Arrangements and Descent Algebras "

Hyperplane arrangements and descent algebras Franco V Saliola saliola-DesAlgLectureNotes.pdf version of 10 January 2006 Errata and addenda by Darij Grinberg I will refer to the results appearing in the article " A Hyperplane arrangements and descent algebras " by the numbers under which they appear in this article. 6. Errata • Various places (for example, §2.1): You use the notations ⊆ and ⊂ sy...

Errata and Addenda to Mathematical Constants

At this point, there are more additions than errors to report... 1.1. Pythagoras’ Constant. A geometric irrationality proof of √ 2 appears in [1] and a curious recursion is studied in [2]. More references on radical denestings include [3, 4, 5, 6]. 1.2. The Golden Mean. The cubic irrational χ = 1.8392867552... is mentioned elsewhere in the literature with regard to iterative functions [7, 8, 9]...

Erratum/errata