Online books or manuscripts

A general URL for online books can be found on the AMS Web site, see here

Link to the book by Jiří Adámek, Horst Herrlich, and George E. Strecker, Abstract and Concrete Categories. The Joy of Cats

Link to Michael Barr and Charles Wells's book Toposes, Triples and Theories

Link to Sterling Berberian's book Baer Rings and Baer *-Rings

Link to George M. Bergman's book An Invitation to General Algebra and Universal Constructions, Henry Helson, Berkeley, CA, 1998. ii+398 p. ISBN: 0-9655211-4-1

Link to Stanley N. Burris and H.P. Sankappanavar's book A Course in Universal Algebra, formerly published in Graduate Texts in Mathematics 78. Springer-Verlag, New York-Berlin, 1981. xvi+276 p. ISBN: 0-387-90578-2

Link to Ralph Freese and Ralph McKenzie's book Commutator Theory for Congruence Modular Varieties, formerly published in London Mathematical Society Lecture Note Series 125. Cambridge University Press, Cambridge, 1987. iv+227 pp. ISBN: 0-521-34832-3

Link to Ken Goodearl and Fred Wehrung's book The Complete Dimension Theory of Partially Ordered Systems with Equivalence and Orthogonality, Mem. Amer. Math. Soc. 176 (2005), no. 831, vii+117 p.

Link to David Hobby and Ralph McKenzie's book The Structure of Finite Algebras Contemporary Mathematics 76. American Mathematical Society, Providence, RI, 1988. xii+203 p. ISBN: 0-8218-5073-3

Link to George Hutchinson's book Lattices and Categories of Modules
This book, together with Hutchinson's expository paper ``Lattice theory equations and interesting lattices", can also be found at the following link

Link to Peter Jipsen and Henry Rose's book Varieties of Lattices, formerly published in Lecture Notes in Mathematics 1533. Springer-Verlag, Berlin, 1992. x+162 p. ISBN: 3-540-56314-8

At the beginning of Jaroslav Ježek's Web page, you can find several downloadable manuscripts: Universal Algebra, Geometries, bibliography database of universal algebra.

Link to Emil Kiss and Keith Kearnes's book The Shape of Congruence Lattices

Link to J.B. Nation's book Notes on Lattice Theory

Link to Donald S. Passman's book Group Rings, Crossed Products and Galois Theory

Lecture Notes of my graduate course about ordered algebraic structures (in French, and pdf format; 1.2 MB): Structures algébriques ordonnées