Authors: N. Gherstega,
Popa Mihail, Pricop Victor
Abstract
Hilbert series for the graded algebras of comitants S
1,4 and invariants SI
1,4 of differential system are constructed and with their help the Krull dimensions of these algebras are determined. The lower bounds for the number of the types of generators for the algebras S
1,4 and SI
1,4 are obtained.
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