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Efficient characteristic set methods for computing solutions of polynomial equation systems in a finite field are proposed. The concept of proper triangular sets is introduced and an explicit formula ...
In this paper, a new Ritt-Wu's characteristic set method for ordinary di®erence systems is proposed, which is valid for any admissible ordering. New deˉnition for irreducible chains and new zero ...
We prove several basic properties for di®erence ascending chains including a necessary and scient condition for an ascending chain to be the characteristic set of its saturation ideal and a nec...
In this paper, we present a characteristic set method for mixed differential and difference polynomial systems. We introduce the concepts of coherent, regular, proper irreducible, and strongly irreduc...
In this paper, we present a characteristic set method for mixed dierence and dierential polynomial systems. We introduce the concepts of coherent, regular,proper irreducible, and strong irreducible as...
This is the ˉrst paper of a series of three papers under the same title. It presents an improved version of Ritt{Wu's decomposition algorithm which is the basis of our methods of mechanical theorem pr...
We clarify the formulation problem of mechanical theorem proving in di®erential geometry and mechanics and propose two formulations. We present complete methods of mechanical theorem proving for ...

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