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The twisted Eguchi-Kawai (TEK) model provides a non-perturbative de¯nition
of noncommutative Yang-Mills theory: the continuum limit is approached at large-N by
performing suitable double scaling limits, in which non-planar contributions are no longer
suppressed. We consider here the two-dimensional case, trying to recover within this frame-
work the exact results recently obtained by means of Morita equivalence. We present a
rather explicit construction of classical gauge theories on noncommutative toroidal lattice
for general topological charges. After discussing the limiting procedures to recover the
theory on the noncommutative torus and on the noncommutative plane, we focus our at-
tention on the classical solutions of the related TEK models. We solve the equations of
motion and we ¯nd the con¯gurations having ¯nite action in the relevant double scaling
limits. They can be explicitly described in terms of twist-eaters and they exactly cor-
respond to the instanton solutions that are seen to dominate the partition function on
the noncommutative torus. Fluxons on the noncommutative plane are recovered as well.
We also discuss how the highly non-trivial structure of the exact partition function can
emerge from a direct matrix model computation. The quantum consistency of the TEK
formulation is eventually checked by computing Wilson loops in a particular limit
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