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Jan Vaerman (1653–1731) was a Flemish mathematician. He worked as a school teacher first in Bruges and then, from 1693 to 1717, in Tielt. He wrote about...

In geometry, a double wedge is the (closure of) the symmetric difference of two half-spaces whose boundaries are not parallel to each other. For instance...

In mathematics, an ordered algebra is an algebra over the real numbers R {\displaystyle \mathbb {R} } with unit e together with an associated order such...

In quantum group and Hopf algebra, the bicrossed product is a process to create new Hopf algebras from the given ones. It's motivated by the Zappa–Szép...