MAPPINGS OF CLOSURE RELATIONS

[1] Birkhoff Garrett, 1940, C PUBLICATIONS AM MA, V25

[2] Combinations of closure relations [J]. ANNALS OF MATHEMATICS, 1943, 44 : 514 - 533

[3] ORE O, 1943, DUKE MATH J, V10, P761

[4] Galois connexions [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1944, 55 (1-3) : 493 - 513

[5] Tarski A., 1929, FUND MATH, V16, P181

[1] Birkhoff Garrett, 1940, C PUBLICATIONS AM MA, V25

[2] Combinations of closure relations [J]. ANNALS OF MATHEMATICS, 1943, 44 : 514 - 533

[3] ORE O, 1943, DUKE MATH J, V10, P761

[4] Galois connexions [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1944, 55 (1-3) : 493 - 513

[5] Tarski A., 1929, FUND MATH, V16, P181