ИСТИНА

We consider the renormalization group as an infinite dimensional Lie group and construct the corresponding Lie algebra. Using this result for the MS-like renormalization prescriptions we derive some exact expressions for the renormalization constants. These expressions are obtained for a version of the dimensional technique in which the dimensionful parameter $\Lambda$ differs from the renormalization scale $\mu$. They encode the equations relating the coefficients at higher $\varepsilon$-poles, powers of $\ln \Lambda/\mu$, and mixed terms of the structure $\varepsilon^{-q} \ln^p \Lambda/\mu$ to the coefficients of the renormalization group functions (i.e. of the $\beta$-function and the anomalous dimension). The general results obtained from the renormalization group arguments are verified by some multiloop calculations.