3 papers
math.CT2025
Cartesian closedness of the category of real-valued sets, I
Lili Shen, Jian Zhang
Let be the unit interval equipped with a continuous t-norm . It is shown that the category of -sets is cartesian closed if, and only if, is the mi…
math.LO2025
The complexity of classifying continuous t-norms up to isomorphism
Jialiang He, Lili Shen, Yi Zhou
It is shown that the isomorphism relation between continuous t-norms is Borel bireducible with the relation of order isomorphism between linear orders on the set of natural numbers…
math.CT2025
is not generally a topos
Xiao Hu, Lili Shen
For a commutative, unital and divisible quantale , it is shown that the category of -sets is a topos if, and only if, is a frame.