The primary function of the cerebellum is to maintain posture and balance. When we jump to the side, reach forward, or turn suddenly, it subconsciously evaluates each movement. The cerebellum then sends signals to the cerebrum, indicating muscle movements that will adjust our position to keep us steady.
The Ackermann function is a classic example of a recursive function, notable especially because it is not a primitive recursive function. It grows very quickly in value, as does the size of its call tree.
Automated Customer Account Transfer. The transfer of securities from one account to another at a separate bank or brokerage. This may be done for any security or derivative: stocks, bonds, options, and futures may all be transferred via ACAT.