The ‘Incomplete open cubes’ are a sequence of open-sided cube structures, each missing between one and nine of their sides. At once repetitive and varied, this series lays out 122 possible variations on the concept. The ‘Incomplete open cubes’ exemplify LeWitt’s conceptual practice and have been widely interpreted as embodying systematic rationality; they are based on an arithmetic concept which they then take to its logical extreme. While they are internally consistent, they also manifest an irrational, obsessive quality reflected in LeWitt’s own comment that ‘irrational thoughts should be followed absolutely and logically’. Here he presents a binary between the rational and the irrational.


  • Title: Incomplete open cube 5/6
  • Creator: Sol LeWitt
  • Date Created: 1974
  • Physical Dimensions: 108.0 x 108.0 x 108.0 cm
  • Type: Sculpture
  • Rights: Gift of the John Kaldor Family Collection 2011 © Estate of Sol LeWitt
  • Medium: baked enamel on aluminium
  • Signature & Date: Signed Certificate of authenticity, black felt tip pen "Sol LeWitt".
  • Artist Country: United States of America

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