A-classification of idempotent functions of many-valued logic

Clones Closed Under Conjugation I: Clones With Constants

“…• [15,16] by Marchenkov, which proves that there are finitely many A A -closed clones when 4 ≤ |A| < ω.…”

On the structure of equationally closed classes

“…In a series of papers [1][2][3][4][5][6][7][8][9][12][13][14][15][16][17][18][19][20][21], on the set of functions of many-valued logic closure operators are defined, which are much more strong than the usually considered superposition operator. In particular, for any k 2 these operators generate on the set P k of the functions of k-valued logic finite (occasionally, countable) classifications.…”