Solving the riddle of phyllotaxis. Why the Fibonacci numbers and the golden ratio occur on plants. With a foreword by Stephen L. Adler (Q2915834)

After receiving a Ph.D. in mathematics in 1961 for his work on composition algebras, Irving Adler became interested in the classic problem of phyllotaxis that has long fascinated scientists. The term phyllotaxis refers to the arrangement of leaves on plants that creates beautiful and complex repeated patterns. In most cases, this problem is intimately related to the Fibonacci numbers and the golden ratio. Over a period of two decades, Dr. Adler constructed a rigorous mathematical model of phyllotaxis and has been a major contributor to the subject. This reprint volume collects his papers published in the Journal of Theoretical Biology, Journal of Algebra and the book [\textit{R. V. Jean} (ed.) and \textit{D. Barabé} (ed.) [Symmetry in plants. Singapore: World Scientific Publishing (1998; Zbl 0926.92024)]. It is a thoughtful tribute to Dr. Adler's multi-faceted career as a researcher, educator, political activist, and the author of over eighty books on mathematics and science for children and adults.