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}.
The cause of cerebral palsy is a brain injury or brain malformation that occurs while the brain is developing â before, during, or after birth. As a result of the brain damage during brain development a childâs muscle control, muscle coordination, muscle tone, reflex, posture and balance can be affected.erebral palsy is caused by brain injury or brain malformation that occurs before, during, or immediately after birth while the infantâs brain is under development.
Damage to any of these parts of the brain may cause cerebral palsy. 1  Spastic â Spastic cerebral palsy is caused by damage to the motor cortex. 2  Athetoid/dyskinetic â Athetoid CP is caused by damage to the cerebellum and/or the basal ganglia. 3  Ataxic â Damage strictly to the cerebellum causes ataxic cerebral palsy.