During the late 1920s, Jacques Herbrand, a young mathematician, developed a method to check the validity of a class of first-order logic formulas. In his thesis, published in 1931, Herbrand discussed what can be considered the first unification procedure. Unification is at the heart of modern implementations of logic programming languages
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© 2009 Springer-Verlag London Limited
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Fernández, M. (2009). Logic-Based Models of Computation. In: Models of Computation. Undergraduate Topics in Computer Science. Springer, London. https://doi.org/10.1007/978-1-84882-434-8_5
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