Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First steps in the geography of scale Hilbert structures   Scale structures were introduced by H.Hofer, K.Wysocki, and E.Zehnder. In
this note we define an invariant for scale Hilbert spaces modulo scale
isomorphism and use it to distinguish large classes of scale Hilbert spaces.

19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th