Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiples of Pfister forms   The isotropy of multiples of Pfister forms is studied. In particular, an
improved lower bound on the values of their first Witt indices is obtained. A
number of corollaries of this result are outlined. An investigation of generic
Pfister multiples is also undertaken. These results are applied to distinguish
between properties preserved by Pfister products.

17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn