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Homological Perturbation Theory And Computability Of Hochschild And Cyclic Homologies Of Cdgas
, 1997
"... . We establish an algorithm computing the homology of commutative dierential graded algebras (briey, CDGAs). The main tool in this approach is given by the Homological Perturbation Theory particularized for the algebra category (see [21]). Taking into account these results, we develop and rene some ..."
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. We establish an algorithm computing the homology of commutative dierential graded algebras (briey, CDGAs). The main tool in this approach is given by the Homological Perturbation Theory particularized for the algebra category (see [21]). Taking into account these results, we develop and rene some methods already known about the computation of the Hochschild and cyclic homologies of CDGAs. In the last section of the paper, we analyze the plocal homology of the iterated bar construction of a CDGA (p prime). 1. Introduction. The description of eÆcient algorithms of homological computation might be considered as a very important question in Homological Algebra, in order to use those processes mainly in the resolution of problems on algebraic topology; but this subject also inuence directly on the development of non so closedareas as Cohomological Physics (in this sense, we nd useful references in [12], [24], [25]) and Secondary Calculus ([14], [27], [28]). Working in the context ...
1 On symmetries of KdVlike evolution equations
, 1998
"... The x, tdependence of the symmetries of (1+1)dimensional scalar evolution equations is studied. The sufficient condition of polinomiality in time t of the symmetries of KdVlike evolution equations is found. The general form of time dependence of the symmetries of KdVlike nonlinearizable evolutio ..."
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The x, tdependence of the symmetries of (1+1)dimensional scalar evolution equations is studied. The sufficient condition of polinomiality in time t of the symmetries of KdVlike evolution equations is found. The general form of time dependence of the symmetries of KdVlike nonlinearizable evolution equations is presented. 1