Related papers: Isomorphisms between Two Quantized Enveloping Alge…

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This paper has been withdrawn since it was an inadvertant double submission. An updated version of the original submission can be found at quant-ph/0505131

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This paper has been withdrawn by the author due to the incorrect argument for the security.

This paper has been withdrawn by the author, due an error in the proof of Proposion 2.13.

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This paper has been withdrawn due to same as quant-ph/9908068

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