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Conic intrinsic volumes of Weyl chambers

Published: 7 June 2022
 by  VTeX

Abstract: A new, direct proof of the formulas for the conic intrinsic volumes of the Weyl chambers of types ${A_{n-1}}$, ${B_{n}}$ and ${D_{n}}$ is given. These formulas express the conic intrinsic volumes in terms of the Stirling numbers of the first kind and their B- and D-analogues. The proof involves an explicit determination of the internal and external angles of the faces of the Weyl chambers.
Keywords: intrinsic volumes / Weyl chambers / direct proof / formulas express / proof involves / Stirling numbers / external angles

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