Download Geometrical Aspects of Functional Analysis: Israel Seminar, by M. Gromov (auth.), Joram Lindenstrauss, Vitali D. Milman PDF

By M. Gromov (auth.), Joram Lindenstrauss, Vitali D. Milman (eds.)

These are the court cases of the Israel Seminar at the Geometric points of useful research (GAFA) which was once held among October 1985 and June 1986. the most emphasis of the seminar used to be at the learn of the geometry of Banach areas and specifically the research of convex units in and infinite-dimensional areas. The larger a part of the quantity is made of unique examine papers; many of the papers are expository in nature. jointly, they replicate the huge scope of the issues studied at the present within the framework of the geometry of Banach spaces.

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Example text

Both of these are true for cusp singularities; see [31, 32]. Also, the fibered conical end is conformally equivalent to a fibered cusp end. Because the middle dimensional L2 -cohomology is conformally invariant, the theorem follows. Acknowledgment The second author would like to thank Tamas Hausel, Eugenie Hunsicker, and Rafe Mazzeo for very stimulating conversations. We also thank the referee for useful suggestions. During the preparation of this work, the first author was supported by NSF grant DMS 0105128, while the second author was supported by NSF grant DMS 0707000.

For definiteness, assume that j = m + 1; then, any element of U (m+1) has a unique representative in Cm+1 of the form (w1 , . . , wm , 1), and the m-uple (w1 , . . , wm ) is then uniquely defined up to a am+1 -th root of 1. Moreover, for any m-uple w1 , . . , wm , there exists a unique positive number, s = s(w1 , . . , wm ), such that s · (w1 , . . , wm , 1) = (sa1 w1 , . . , sam wm , sam+1 ) belongs to the unit sphere S2m+1 in Cm+1 , namely the unique positive root of the equation m ∑ s2ai |wi |2 + s2am+1 = 1.

52, 3229–3272, 2005. 20. J. Jost and K. Zuo. Vanishing theorems for L2 -cohomology on infinite coverings of compact K¨ahler manifolds and applications in algebraic geometry. Comm. Anal. , 8(1):1–30, 2000. 21. P. Kronheimer. A Torelli-type theorem for gravitational instantons. J. Diff. , 29(3):685– 697, 1989. 22. E. Looijenga. L2 -cohomology of locally symmetric varieties. , 67:3–20, 1988. 23. R. Mazzeo. The Hodge cohomology of a conformally compact metric. J. Diff. , 28:309– 339, 1988. 24. R. Mazzeo and R.

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