does the Nobel prize for literature is given for 1 book or for a trayectory?

Answer 1

It is awarded to an author generally for one's work as a whole, and not for an individual work, although an individual work might be mentioned in the award. I really couldn't tell you if it is given for a "trayectory" since I have no idea what that is.

Answer 2

There a different categories:
The Nobel Prize in Physiology or Medicine
The Nobel Prize in Physics
The Nobel Prize in Chemistry
The Nobel Peace Prize
The Nobel Prize in Literature
The Nobel Prize in Economics

not sure what a "trayectory" is

Answer 3

It is given for a writer's work over his or her lifetime -- what you might choose to call their trajectory. (Not really hard to know what you meant, typo notwithstanding.)

For example, here is the list of winners:
http://nobelprize.org/nobel_prizes/literature/laureates/

Click on any and it will lead to links to the official statement by the Academy in choosing that person -- it doesn't cite to one work, but to the body of work.

(P.S. -- it wasn't given to a blogger in Iraq last year, but to the British playwright Harold Pinter.)

Answer 4

its given for literature, any literature whether its poetry, prose, a novel or a trajectory as it was last year, to a blogger in iraq.