## Décomposition de la cohomologie cyclique bivariante des algèbres commutatives. (Decomposition of the bivariant cyclic cohomology of commutative algebras).(French)Zbl 0729.18009

Math. Scand. (to appear).
In this paper one extends the Hodge-type decomposition of the cyclic homology to the bivariant cyclic cohomology of commutative algebras. One gets then $$\lambda$$-operations on the bivariant cyclic cohomology and a structure of $$\gamma$$-ring.
Reviewer: P.Nuss

### MSC:

 18G60 Other (co)homology theories (MSC2010) 13D02 Syzygies, resolutions, complexes and commutative rings

### Keywords:

$$\lambda$$ -operations; bivariant cyclic cohomology
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