Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: String$\mathbf{^c}$ Structures and Modular Invariants   In this paper, we study some algebraic topology aspects of String$^c$
structures, more precisely, from the perspective of Whitehead tower and the
perspective of the loop group of $Spin^c(n)$. We also extend the generalized
Witten genera constructed for the first time in \cite{CHZ11} to correspond to
String$^c$ structures of various levels and give vanishing results for them.

30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph