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Il telegrafo è un sistema di comunicazione a distanza ideato per la trasmissione di dati (lettere, numeri e segni di punteggiatura) facendo uso di determinati codici. La comunicazione per mezzo del te ...
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In mathematics, Picard–Lefschetz theory studies the topology of a complex manifold by looking at the critical points of a holomorphic function on the manifold. It was introduced by Émile Picard for co ...
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In mathematics, a Lefschetz pencil is a construction in algebraic geometry considered by Solomon Lefschetz, used to analyse the algebraic topology of an algebraic variety V. A pencil is a particular k ...
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Morphological Echo is a title shared by two oil on panel paintings created by the Spanish surrealist Salvador Dalí.The first of these works was painted between 1934 and 1936 and measures 64 cm × 54 cm ...
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