Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: My Years with Julian Schwinger: From Source Theory through
  Sonoluminescence   I recall my interactions with Julian Schwinger, first as a graduate student
at Harvard, and then as a postdoc at UCLA, in the period 1968--81, and
subsequently. Some aspects of his legacy to physics are discussed.

19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph