Synopsis
We develop the basic theory of root systems $R$ in a real vector space $X$ which are defined in analogy to the usual finite root systems, except that finiteness is replaced by local finiteness: the intersection of $R$ with every finite-dimensional subspace of $X$ is finite. The main topics are Weyl groups, parabolic subsets and positive systems, weights, and gradings.
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Locally Finite Root Systems: 171 (Memoirs of the American Mathematical Society)
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American Mathematical Society, 2004
ISBN 10: 0821835467
ISBN 13: 9780821835463
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Locally finite root systems. Memoirs of the American Mathematical Society; 811.
Published by
Providence, American Math. Soc, 2004
ISBN 10: 0821835467
ISBN 13: 9780821835463
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Softcover. Ex-library in GOOD condition with library-signature and stamp(s). Some traces of use. Ehem. Bibliotheksexemplar mit Signatur und Stempel. GUTER Zustand, ein paar Gebrauchsspuren. C-00553 9780821835463 Sprache: Englisch Gewicht in Gramm: 350. Seller Inventory # 2483071