Tune shift with amplitude of the system. When the tune reaches resonant values, it can be unstable, and thus a tune-shift with amplitude can limit the stability region, or dynamic aperture. In classical mechanics, a simple example of a system with tune shift with amplitude is a pendulum. In accelerator physics, both the transverse and the longitudinal dynamics show tune shift with amplitude. A simple model of the transverse dynamics is of an oscillator with a single sextupole, it is referred to as the Hénon map. Another model for this case is the Standard Map. An important example is the typical case of distributed
Greater-than sign greater-than sign (>) is an original ASCII character (hex 3E, decimal 62). The character in Unicode is ; this is inherited from the same value in ASCII. Apart from this, Unicode also has the following variants: The greater-than sign is used for an approximation of the closing angle bracket (⟩). ASCII does not have angular brackets. BASIC and C-family languages, (including Java and C++) use the operator > to mean "greater than". In Lisp-family languages, > is a function used to mean "greater than". In Coldfusion and Fortran, operator .GT. means "greater than". The double greater-than sign (») is used