Dear All, Previously operations clifford_bar() and clifford_star() called conjugate() method. This results in reversion of all non-commutative entries (not only Clifford units) and produced complex conjugation of all non-real items. The new routine operates on Clifford units only. The test and documentations are updated accordingly. Best wishes, Vladimir -- Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu Software: Geometry of cycles http://moebinv.sourceforge.net/