Decision methods for linearly ordered Heyting algebras

Roy Dyckhoff, Sara Negri
2005 Archive for Mathematical Logic  
The decision problem for positively quantified formulae in the theory of linearly ordered Heyting algebras is known, as a special case of work of Kreisel, to be solvable; a simple solution is here presented, inspired by related ideas in Gödel-Dummett logic.
doi:10.1007/s00153-005-0321-z fatcat:coaw2zsen5e2fccwnte4cwrpvq