title: M-group
text: # M-group
  
  In mathematics, especially in the field of group theory, the term M-group may refer to a few distinct concepts:
  
  * monomial group, in character theory, a group whose complex irreducible characters are all monomial
  * Iwasawa group or modular group, in the study of subgroup lattices, a group whose subgroup lattice is modular
  * virtually polycyclic group, in infinite group theory, a group with a polycyclic subgroup of finite index
  