In math mode a tilde diacritic can be written as, e.g., \tilde{x}. For a wider tilde \widetilde can be used. The \sim command produce a tilde-like binary relation symbol that is often used in mathematical expressions, and the double-tilde â is obtained with \approx. The url package also supports entering tildes directly, e.g., \url{http://server/~name}.
Cerebral palsy (CP) is a broad term used to describe a group of chronic palsies -- disorders that impair control of movement due to damage to the developing brain.CP usually develops by age 2 or 3 and is a nonprogressive brain disorder, meaning the brain damage does not continue to worsen throughout life.erebral palsy (CP) is a broad term used to describe a group of chronic palsies -- disorders that impair control of movement due to damage to the developing brain.
Although the specific brain injury or problem causing cerebral palsy does not worsen, the movement problems can vary over time. Cerebral palsy is caused by damage to the parts of the brain that control muscles and movement. There are many possible ways that the brain can be damaged, including problems during pregnancy, infection, stroke, genetic problems, lack of oxygen, severe jaundice or diseases that cause the brain to develop abnormally.