Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vector variational problem with knitting boundary conditions   We consider a variational problem with a polyconvex integrand and nonstandard
boundary conditions that can be treated as minimization of the stress energy
during the suturing process in the plastic surgery. Ex- istence of minimizers
is proved as well as necessary optimality conditions are discussed.

4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio