This is a preview. Log in through your library . Abstract We consider valued fields with a distinguished isometry or contractive derivation as valued modules over the Ore ring of difference operators.

We give a direct proof of admissibility of cut and contraction for the contraction-free sequent calculus G4ip for intuitionistic propositional logic and for a corresponding multi-succedent calculus: ...

The study of monadic algebraic structures and fuzzy logic has evolved into a vibrant research area that bridges abstract algebra with the nuanced reasoning of uncertainty. By incorporating unary ...

Sudoku and other puzzles can incorporate play and critical thinking skills, while easing students into solving standard math ...