Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Distributive Lattice Cover for Semilattices   We consider two constructions of an envelope for a finite locally
distributive strong upper semilattice. The first is based on Birkhoff's
representation of finite distributive lattices and the second on valuations on
lattices. We show that these produce isomorphic envelopes.

22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
3
The categories of this paper are: physics
1
The categories of this paper are: cs