Definition LT. Linear Transformation. A linear transformation, T : U â V , is a function that carries elements of the vector space U (called the domain) to the vector space V (called the codomain), and which has two additional properties.
Raynaud's sometimes is called a disease, syndrome, or phenomenon. The disorder is marked by brief episodes of vasospasm (VA-so-spazm), which is a narrowing of the blood vessels. Vasospasm of the arteries reduces blood flow to the fingers and toes. In people who have Raynaud's, the disorder usually affects the fingers.
If Raynaud's symptoms are severe, treatment may include heart medications that affect blood vessels, called calcium channel blockers. Doctors will also sometimes prescribe a vasodilator, which causes blood vessels to open up. In extreme cases, nerve surgery or injections may help.