The Hénon map is a discrete-time dynamical system that is commonly studied in the field of chaos theory. It is a simple, quadratic map that can exhibit chaotic behavior, making it an important example in the study of dynamical systems. The map is named after the French mathematician Michel Hénon, who introduced it in the context of studying the dynamics of celestial mechanics and later generalized it for various applications.
The year 1956 is significant in the history of computing for several reasons: 1. **Invention of Magnetic Disk Storage**: In 1956, IBM introduced the IBM 305 RAMAC (Random Access Method of Accounting and Control), which was the first computer to use a hard disk drive. The RAMAC used a disk storage system that allowed data to be accessed randomly rather than sequentially, which was a major advancement in data storage technology.