What is Quasi-set theory?

In theoretical physics, there are many theories with supersymmetry which also have internal gauge symmetries. Supersymmetric gauge theory generalizes this notion.

Mixture theory is used to model multiphase systems using the principles of continuum mechanics generalised to several interpenetrable continua. The basic assumption is that, at any instant of time, all...

The concept of a quasi-median network is a generalization of the concept of a median network that was introduced to represent multistate characters. Note that, unlike median networks, quasi-median networks...

In mathematics, a quasi-projective variety in algebraic geometry is a locally closed subset of a projective variety, i.e., the intersection inside some projective space of a Zariski-open and a Zariski-closed...

In mathematics, the Double extension set theory is an axiomatic set theory proposed by Andrzej Kisielewicz consisting of two separate membership relations on the universe of sets, denoted here by...

In set theory, the kernel of a function f {\displaystyle f} may be...

In descriptive set theory, a tree on a set X {\displaystyle X} is...

In mathematical logic, positive set theory is the name for a class of alternative set theories in which the axiom of comprehension holds for at least the positive formulas...

In homological algebra, a branch of mathematics, a quasi-isomorphism or quism is a morphism A → B of chain complexes such that the induced morphisms of homology groups are isomorphisms...