作者: Peter Burmeister
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摘要: 1This book was published 1986 by the Akademie-Verlag Berlin, Volume 32 in series “Mathematical Research”; Lector Dr. Reinhard Hoppner. It printed German Democratic Republic. has been transferred into LATEX Ulrich Thiemann. In connection with this translation also notation for direction used composition of homomorphisms changed (the first morphism is written to right second one, etc.). So far most diagrams are still missing. Also an index The errors and misprints original version have not yet corrected. bibliography extended about 1990 updated – moreover, it may contain many titles, which treat “partial operations” (which keyword search Zentralblatt), but really concerned partial algebras sense book. order get a better idea material book, article: Tools Theory Partial Algebras, in: General Algebra Applications (Eds.: K.Denecke H.-J.Vogel), Research Exposition Mathematics, Vol. 20, Heldermann Verlag 1993, pp. 12–32, added revised introduction.