Abstract Art is art that does not represent objects, form in the world accurately. Moreover, the shape, color, and form are used in a non-representational way.
Many different abstract styles:
- Cubism
- Neoplasticism
- Abstract Expressionism
There are some famous abstract artists
Pablo Ruiz Picasso (October 25, 1881 – April 8, 1973):
He was born in Malaga. He was a Spanish painter and sculptor. He is one of the most abstract artists in 20th century art. His style is Cubism.
There are some his famous paintings


Georges Braque (May 13, 1882 – August 31, 1963):
He was a French painter and sculptor. He is also one of the most abstract artists in 20th century art. His style is Cubism.
There are some his famous paintings



References:
http://www.palestine-art.com/The_Art/Art_Schools_Abstract.html
http://en.wikipedia.org/wiki/Abstract_art#_note-0
http://en.wikipedia.org/wiki/Pablo_Ruiz_Picasso
http://en.wikipedia.org/wiki/Georges_Braque
http://upload.wikimedia.org/wikipedia/en/b/b5/L%27Accord%C3%A9oniste.jpg
http://www.engl.niu.edu/dderosa/AmericanSurvey/1900/main.html
http://faculty.evansville.edu/rl29/art105/img/picasso_demoiselles.jpg
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