Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A penalty free non-symmetric Nitsche type method for the weak imposition
  of boundary conditions   In this note we show that the non-symmetric version of the classical
Nitsche's method for the weak imposition of boundary conditions is stable
without penalty term. We prove optimal $H^1$-error estimates and
$L^2$-estimates that are suboptimal with half an order in $h$. Both the pure
diffusion and the convection--diffusion problems are discussed.

9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th