منابع مشابه
A Simple Characterization of Du Bois Singularities
We prove the following theorem characterizing Du Bois singularities. Suppose that Y is smooth and that X is a reduced closed subscheme. Let π : e Y → Y be a log resolution of X in Y that is an isomorphism outside of X. If E is the reduced pre-image of X in e Y , then X has Du Bois singularities if and only if the natural map ØX → Rπ∗ØE is a quasi-isomorphism. We also deduce Kollár’s conjecture ...
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In this paper, we prove that singularities of F -injective type are Du Bois. This extends the correspondence between singularities associated to the minimal model program and singularities defined by the action of Frobenius in positive characteristic.
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We prove that a Cohen-Macaulay normal variety X has Du Bois singularities if and only if π∗ωX′(G) ≃ ωX for a log resolution π : X ′ → X , where G is the reduced exceptional divisor of π. Many basic theorems about Du Bois singularities become transparent using this characterization (including the fact that Cohen-Macaulay log canonical singularities are Du Bois). We also give a straightforward an...
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Contemporary neuroscience unites three scientific traditions: one in anatomy that goes back to the Greeks (functional localization), one in chemistry that arose in the twentieth-century (neurotransmitters), and one in physics that arose in the nineteenth-century (electrical signals) (Clarke and Jacyna, 1987; Finger, 1994; Valenstein, 2005; McComas, 2011). Emil du Bois-Reymond is the father of t...
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This paper "reads" the scholarship of W. E. B. Du Bois and references East African history and historiography, including the broader pan-African tradition of which Du Bois was a leading member. Du Bois and his pan-African colleagues were often more accurate in their analyses and perception of biases and colonial myths than their Western counterparts. What is significant is that biases and myths...
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ژورنال
عنوان ژورنال: The Journal of Asian Studies
سال: 1991
ISSN: 0021-9118,1752-0401
DOI: 10.1017/s0021911800096911