Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Naive motivic Donaldson-Thomas type Hirzebruch classes and some problems   Donaldson-Thomas invariant is expressed as the weighted Euler characteristic
of the so-called Behrend (constructible) function. In \cite{Behrend} Behrend
introduced a DT-type invariant for a morphism. Motivated by this invariant, we
extend the motivic Hirzebruch class to naive Donaldson-Thomas type analogues.
We also discuss a categorification of the DT-type invariant for a morphism from
a bivariant-theoretic viewpoint, and we finally pose some related questions for
further investigations.

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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: physics