Abstract
The following is proved: If ๐โ is the noncancellable product of the formations ๐ and โ and ๐โ โ ๐ for some one-generated saturated finite variety ๐, then ๐ is soluble.
ACKNOWLEDGMENT
The author is very grateful to the helpful suggestions of the referee.
Research of the author is supported by Belarussian Republic Foundation of Fundamental Research (BRFFIโRFFI, grant F10R231).
Notes
Communicated by A. Turull.