Functional representations of integrable hierarchies
Functional representations of integrable hierarchies
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DOI:
10.1088/0305-4470/39/29/012
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发表时间:
2006-03
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通讯作者:
A. Dimakis;F. Muller-Hoissen
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文献类型:
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作者:
A. Dimakis;F. Muller-Hoissen
We consider a general framework for integrable hierarchies in Lax form and derive certain universal equations from which 'functional representations' of particular hierarchies (such as KP, discrete KP, mKP, AKNS), i.e. formulations in terms of functional equations, are systematically and quite easily obtained. The formalism genuinely applies to hierarchies where the dependent variables live in a noncommutative (typically matrix) algebra. The obtained functional representations can be understood as 'noncommutative' analogues of 'Fay identities' for the KP hierarchy.