Ganna Kudryavtseva

The free F-restriction semigroups

Abstract We provide a geometric model for the free X -generated F -restriction semigroup in the extended signature $${(\cdot , ^+,^{\mathfrak {m}},\lambda )}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:mo>·</mml:mo> <mml:msup> <m...