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Pasting lemma is proved in Isabelle/HOL. General topology is formalized to express Pasting lemma. Topology definitions and proofs are written in a computer language so that they can be formally verified by machine. We formalize general topology in Isabelle/HOL to find out reasoning mechanisms in general topology. Our personal motivation to prove this lemma is to explore applications of different knowledge domains.
Date of Conference: 24-25 April 2010