Show HN: Mathematics Refresher Book for people returning to maths (abdulqabiz.com)

A new free book titled "A Mathematics Refresher" has been released, designed for individuals returning to mathematics, especially those working in fields like AI and machine learning. The book offers a comprehensive journey from foundational arithmetic to advanced concepts pertinent to AI, such as embeddings and gradient descent. It features 23 chapters, 310 exercises, and 42 illustrative figures, all structured to aid in visual learning and practical application. The EPUB format utilizes MathML for clarity, while a PDF option is available for older readers with compatibility issues. This resource is significant for the AI/ML community as it addresses a common gap in mathematical knowledge that practitioners may experience, particularly in understanding the underlying principles of the algorithms they frequently discuss. Co-authored with AI assistance from Anthropic's Claude models, the book has been meticulously crafted and reviewed, ensuring that the material is both accurate and engaging. The interactive app enhances the reading experience, allowing users to explore concepts hands-on. This initiative not only aims to refresh mathematical skills but also encourages a collaborative approach to learning, inviting readers to report errors for future editions.