Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Data Transmission in the Fourth Dimension   Alice wants to send an arbitrary binary word to Bob. We show here that there
is no problem for her to do that with only two bits. Of course, we consider
here information like a signal in 4D.

14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ