An Abundance of Katherines is a young adult novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

 by John Green. Released in 2006

2006 in literature

The year 2006 in literature involved some significant events and new books.-Literature:*Chimamanda Ngozi Adichie - Half of a Yellow Sun*Chris Adrian - The Children's Hospital *Martin Amis - House of Meetings...

, it was a finalist for the Michael L. Printz Award

Michael L. Printz Award

The Michael L. Printz Award is an annual award in the United States for a book that exemplifies literary excellence in young adult literature. It is named for a school librarian from Topeka, Kansas, who was a long-time active member of the Young Adult Library Services Association...

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An appendix explaining some of the more complex equations Colin uses throughout the story was written by Daniel Biss

Daniel Biss

Daniel Kálmán Biss is an American mathematician and State Representative for the 17th district in the Illinois House of Representatives, serving since 2011...

, a close friend to Green.
Colin Singleton is an anagram-loving seventeen year old boy who has become depressed because though he has maintained his status of a child prodigy, he has not yet become a “genius.” He wishes to accomplish this goal by having a Eureka moment.