Andrei Lavrenov

most citedRelative symplectic Steinberg group

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math.KT2014★ 1 cited

Relative symplectic Steinberg group

Andrei Lavrenov

We give two definitions of relative symplectic Steinberg group and show that they coincide.

math.KT2014★ 1 cited

Another presentation for symplectic Steinberg groups

Andrei Lavrenov

We solve a classical problem of centrality of symplectic $K_{2}$ , namely we show that for an arbitrary commutative ring $R$ , $l \geq 3$ the symplectic Steinberg group $\mathrm{…