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            <title xml:lang="en">Defining Context-Free Power Series Coalgebraically</title>
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            <idno type="halRefHtml">&lt;i&gt;11th International Workshop on Coalgebraic Methods in Computer Science (CMCS)&lt;/i&gt;, Mar 2012, Tallinn, Estonia. pp.20-39, &lt;a target="_blank" href="https://dx.doi.org/10.1007/978-3-642-32784-1_2"&gt;&amp;#x27E8;10.1007/978-3-642-32784-1_2&amp;#x27E9;&lt;/a&gt;</idno>
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                <title xml:lang="en">Defining Context-Free Power Series Coalgebraically</title>
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                  <date type="end">2012-04-01</date>
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                <editor>Dirk Pattinson</editor>
                <editor>Lutz Schröder</editor>
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              <p>In this paper we present a coinductive definition of context free power series in terms of behavioural differential equations. We show that our coalgebraic approach provides a unified view on many, at first sight different, existing notions of algebraicity, and we apply our behavioural differential equations to produce a new proof for a classical result by Chomsky and Schützenberger, and a simple proof that the zip-operator of two algebraic streams is algebraic.</p>
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