Displaying similar documents to “Free field construction of D-branes in rational models of CFT and Gepner models.”

Almost free splitters

Rüdiger Göbel, Saharon Shelah (1999)

Colloquium Mathematicae

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Let R be a subring of the rationals. We want to investigate self splitting R-modules G, that is, such that E x t R ( G , G ) = 0 . For simplicity we will call such modules splitters (see [10]). Also other names like stones are used (see a dictionary in Ringel’s paper [8]). Our investigation continues [5]. In [5] we answered an open problem by constructing a large class of splitters. Classical splitters are free modules and torsion-free, algebraically compact ones. In [5] we concentrated on splitters which...

L -Khintchine-Bonami inequality in free probability

Artur Buchholz (1998)

Banach Center Publications

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We prove the norm estimates for operator-valued functions on free groups supported on the words with fixed length ( f = | w | = l a w λ ( w ) ). Next, we replace the translations by the free generators with a free family of operators and prove inequalities of the same type.

Mild 2-relator pro- p -groups.

Bush, Michael R., Gärtner, Jochen, Labute, John, Vogel, Denis (2011)

The New York Journal of Mathematics [electronic only]

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