Institute of Mathematics

The WoKaS-Iso database: workflow for a global compilation of oxygen-18 and deuterium records in karst springs and cave drip water for enhanced understanding of karst systems

For analysing karst hydrogeological systems, observations of karst springs and cave drips are considered indispensable. In addition to hydrometric observations, knowing the oxygen and hydrogen stable isotope ratios has improved the understanding of vadose zone and aquifer dynamic...

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...