What is a closed-form number?

Article by Timothy Y. Chow

In collections: Notation and conventions, The act of doing maths

If a student asks for an antiderivative of exp(x^2), there is a standard reply: the answer is not an elementary function. But if a student asks for a closed-form expression for the real root of x = cos(x), there...

URL: http://arxiv.org/abs/math/9805045v1

PDF: http://arxiv.org/pdf/math/9805045v1

Entry: http://read.somethingorotherwhatever.com/entry/Whatisaclosedformnumber