Codimension and pseudometric in co-Heyting algebras

We start in Section 2 with preliminaries on graded Gorenstein algebras, and Cohen-Macaulay modules, and define the notion of bimodule stably (1)-twisted d-Calabi- Yau algebras. The

The final Section 7 is not closely related to the rest of the paper. It describes a construction of a sequence of integral polytopes associated to a symmetric integral matrix

We provide here a parametrization of a neighbourhood of y in which Tis defined by a differential 1-form whose coefficients satisfy global properties closely related to

After summarising in Section 1 the results known on stable equivalence of Mor- ita type of algebras of dihedral, semi-dihedral and quaternion type, as well as proving our main

The fusion procedure is closely related with the inductive approach to the representation theory of towers of algebras, see [OV] for the symmetric groups, and the generalizations

The organization of the present paper is as follows. After some pre- liminaries in section 1 we define in section 2 the notion of algebras over an operad P in the category of S

We remark that Conjecture 1 is also closely related to the combinatorial theory of face numbers of triangulated spheres and manifolds, in particular the Generalized Lower Bound