Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non null controllability of Stokes equations with memory   In this paper, we study the null controllability of the three-dimensional
Stokes equations with a memory term. For any positive final time $T>0$, we
construct initial conditions such that the null controllability does not hold
even if the controls act on the whole boundary. Moreover, we also prove that
this negative result holds for distributed controls.

8
The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int