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{\bf Mesut \c{S}ah\.{i}n}
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{\bf Extensions of Toric Varieties}
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In this paper, we introduce the notion of ``extension" of a toric
variety and study its fundamental properties. This gives rise to
infinitely many toric varieties with a special property, such as
being set theoretic complete intersection or arithmetically
Cohen-Macaulay (Gorenstein) and having a Cohen-Macaulay tangent
cone or a local ring with non-decreasing Hilbert function, from
just one single example with the same property, verifying Rossi's
conjecture for larger classes and extending some results appeared
in literature.



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