Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stringy invariants of normal surfaces   The stringy Euler number and E-function of Batyrev for log terminal
singularities can in dimension 2 also be considered for a normal surface
singularity with all log discrepancies nonzero in its minimal log resolution.
Here we obtain a structure theorem for resolution graphs with respect to log
discrepancies, implying that these stringy invariants can be defined in a
natural way, even when some log discrepancies are zero, and more precisely for
all normal surface singularities which are not log canonical. We also show that
the stringy E-functions of log terminal surface singularities are polynomials
(with rational powers) with nonnegative coefficients, yielding well defined
(rationally graded) stringy Hodge numbers.

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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph