Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design for a Room Temperature Superconductor   The vision of ``room temperature superconductivity'' has appeared
intermittently but prominently in the literature since 1964, when W. A. Little
and V. L. Ginzburg began working on the `problem of high temperature
superconductivity' around the same time. Since that time the prospects for room
temperature superconductivity have varied from gloom (around 1980) to glee (the
years immediately after the discovery of HTS), to wait-and-see (the current
feeling). Recent discoveries have clarified old issues, making it possible to
construct the blueprint for a viable room temperature superconductor.

29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn