Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Hopf algebras of type B quasisymmetric functions and peak functions   We show that with the appropriate choice of coproduct, the type B
quasisymmetric functions form a Hopf algebra, and the recently introduced type
B peak functions form a Hopf subalgebra.

5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas