整环的赋值扩环及赋值维数,王芳贵,,设R是整环,其商域为K. dim_v(R)表示$R$的赋值维数。本文证明了:(1) dim_v(R)是$R$的既是UMT整环,又是DW整环的扩环升链R_msubset R_{m-1}subset cdot