Geodesic

Volume 21 (2001) no. 2

Sommaire

Cardinalities of lattices of topologies of unars and some related topics
p. 129-137
On the structure of halfdiagonal-halfterminal-symmetric categories with diagonal inversions
p. 139-163
Some modifications of congruence permutability and dually congruence regular varietie
p. 165-174
The semantical hyperunification problem
p. 175-200
Minimal formations of universal algebras
p. 201-205
Maximal column rank preservers of fuzzy matrices
p. 207-218
Tree transformations defined by hypersubstitutions
p. 219-227
Congruence classes in Brouwerian semilattices
p. 229-237
Ring-like structures with unique symmetric difference related to quantum logic
p. 239-253
The lattice of subvarieties of the biregularization of the variety of Boolean algebras
p. 255-268