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Far East Journal of Applied Mathematics
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Abstract: A nilpotent operator of the form ![](/admin/Images/ojs87a_nilp14.gif)
where ![](/admin/Images/ojs88a_nilp15.gif)
is an ![](/admin/Images/ojs89a_nilp16.gif)
matrix depending smoothly on t, has to satisfy ![](/admin/Images/ojs90a_nilp17.gif)
as for ordinary nilpotent matrices of order n. |
Keywords and phrases: linear differential operators, nilpotent differential operators, nilpotency index. |
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P-ISSN: 0972-0960 |
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