Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Contact Structures of Sasaki Type and their Associated Moduli   This article is based on a talk at the RIEMain in Contact conference in
Cagliari, Italy in honor of the 78th birthday of David Blair one of the
founders of modern Riemannian contact geometry. The present article is a survey
of a special type of Riemannian contact structure known as Sasakian geometry.
An ultimate goal of this survey is to understand the moduli of classes of
Sasakian structures as well as the moduli of extremal and constant scalar
curvature Sasaki metrics, and in particular the moduli of Sasaki-Einstein
metrics.

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The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th