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10.39 (1986)

Open

a) Is the membership problem soluble for the subgroup $E_n(R)$ of $SL_n(R)$ where $R$ is a commutative ring?
b) Is the word problem soluble for the groups $K_i(R)$ where $K_i$ are the Quillen $K$-functors and $R$ is a commutative ring?

Contributor: G. A. Noskov

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