Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Courant morphisms and moment maps   We study Hamiltonian spaces associated with pairs (E,A), where E is a Courant
algebroid and A\subset E is a Dirac structure. These spaces are defined in
terms of morphisms of Courant algebroids with suitable compatibility
conditions. Several of their properties are discussed, including a reduction
procedure. This set-up encompasses familiar moment map theories, such as
group-valued moment maps, and it provides an intrinsic approach from which
different geometrical descriptions of moment maps can be naturally derived. As
an application, we discuss the relationship between quasi-Poisson and
presymplectic groupoids.

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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: physics