Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semi-equational theories   We introduce and study semi-equational and weakly semi-equational theories,
generalizing equationality in stable theories (in the sense of Srour) to the
NIP context. In particular, we establish a connection to distality via
one-sided strong honest definitions; demonstrate that certain trees are
semi-equational, while algebraically closed valued fields are not weakly
semi-equational; and obtain a general criterion for weak semi-equationality of
an expansion of a distal structure by a new predicate.

24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an