Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Creating an Artificial World with a New Kind of Cellular Automata   This paper describes a new concept of cellular automaton (CA). XCA consists
of a set of arcs (edges) that correspond to cells in CA. At a particular time,
the arcs are connected to a directed graph. With each time step, the arcs
exchange their neighbors (adjacent arcs) according to rules that depend on the
statuses of the adjacent arcs. An XCA can be used to simulate an artificial
world beginning with a Big Bang. In contrast to an CA, an XCA does not require
a grid. However, it can create one, just as the real universe after the Big
Bang generated its own space, which had not excisted previously. Examples using
different rules reveal the manifold nature of the XCA concept. Similar to John
Conway s well-known The Game of Life simulates birth, survival, and death, this
game can simulate a system that begins from a singularity, and evolves into a
complex space.

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The categories of this paper are: gr-qc
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The categories of this paper are: stat
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat