Irreducible components of characteristic
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Gregory G. Smith
📂
Article
📅
2001
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Elsevier Science
🌐
English
⚖ 158 KB
We give a dimension bound on the irreducible components of the characteristic variety of a system of linear partial di erential equations deÿned from a suitable ÿltration of the Weyl algebra An. This generalizes an important consequence of the fact that a characteristic variety deÿned from the order