## Proceedings of the Conference on Universal Algebra: October 1969, [Queen's University]. |

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### Contents

Preface and Acknowledger? | 1 |

Topological Boolean Algebras | 107 |

Injectivity and Essential Extensions | 131 |

Copyright | |

8 other sections not shown

### Common terms and phrases

abelian category abelian groups amalgamation property automorphism group binary operations Boolean algebras cardinality characterization classes of p-algebras closed elements comaximal commutative congruence contradiction Corollary cosimple countable define definition denote depends diagram distinct minimal prime distributive lattice E-injective E. T. Schmidt embeddings endomorphism equational class equational compactness equationally compact essentiallv essentially n-ary polynomial exists following theorem Hence holds homomorphism idempotent idempotent algebra implies Injective hulls isomorphism left-cancellative Lemma M-sets maps maximal ideal maximal proper minimal prime ideal monic monomorphism morphism natural number non-associative obtained onlv p.o. systems Pn+1 prime filter Proposition prove pseudo-complemented Ptonka pushouts Remark representable representing algebra result satisfies condition semigroup sequence Stone algebra Stone Lattices subalgebra subdirect subdirectly irreducible subset symmetrical monoid ternary trivial unarv unary unary operations universal algebra versatile monoids word problem xn+1 zero