Z. Bartosiewicz, Ü. Kotta, Ewa Pawuszewicz, Magorzata Wyrwas
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Algebraic formalism of differential one-forms for nonlinear control systems on time scales; 264-282
The paper develops algebraic formalism of differential one-forms, associated with the nonlinear control system defined on homogeneous time scales. This formalism unifies the existing theories for continuous- and discrete-time systems. A field of meromorphic functions, corresponding to a control system, is introduced. It is equipped with two operators whose properties are studied. An inversive closure of this field is constructed with the aid of one- forms.