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Von Neumann's System of Self-Replication Automata with the ability to evolve (Figure adapted from Luis Rocha's Lecture Notes at Binghamton University [6]).i) the self-replicating system is composed of several automata plus a separate description (an encoding formalized as a Turing 'tape') of all the automata: Universal Constructor (A), Universal Copier (B), operating system (C), extra ...
John von Neumann (1903–1957) was a Hungarian-American mathematician, physicist, computer scientist, engineer and polymath.He had perhaps the widest coverage of any mathematician of his time, integrating pure and applied sciences and making major contributions to many fields, including mathematics, physics, economics, computing, and statistics.
Their original purpose was to provide insight into the logical requirements for machine self-replication, and they were used in von Neumann's universal constructor. Nobili's cellular automaton is a variation of von Neumann's cellular automaton, augmented with the ability for confluent cells to cross signals and store information.
Video of Chris Langton demonstrating self reproducing loops. visual representation of several of the self-replicating loops in a Java applet; The Rule Table Repository has the transition tables for many of the CA mentioned above. Golly - supports Langton's Loops along with the Game of Life, and other rulesets.
Notably, Von Neumann's Self-Reproducing Automata scheme posited that open-ended evolution requires inherited information to be copied and passed to offspring separately from the self-replicating machine, an insight that preceded the discovery of the structure of the DNA molecule by Watson and Crick and how it is separately translated and ...
A quine's output is exactly the same as its source code. A quine is a computer program that takes no input and produces a copy of its own source code as its only output. The standard terms for these programs in the computability theory and computer science literature are "self-replicating programs", "self-reproducing programs", and "self-copying programs".
In computer science a quine is a self-reproducing computer program that, when executed, outputs its own code. For example, a quine in the Python programming language is: a = 'a= %r;print(a %% a)'; print (a % a) A more trivial approach is to write a program that will make a copy of any stream of data that it is directed to, and then direct it at ...
Neumann wrote a paper entitled "The general and logical theory of automata" for the Hixon Symposium in 1948. [11] Ulam was the one who suggested using a discrete system for creating a reductionist model of self-replication. [8]: 3 [12]: xxix Ulam and von Neumann created a method for calculating liquid motion in the late 1950s. The driving ...