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Fused Hierarchy Produced by mKdV Hierarchy and Sine-Gordon Hierarchy

Journal of the Physical Society of Japan, 2003
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Konno, Kimiaki, Kakuhata, Hiroshi
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The Helping Hierarchy

RAIRO - Theoretical Informatics and Applications, 2001
Summary: \textit{U. Schöning} [Theor. Comput. Sci. 40, 57--66 (1985; Zbl 0574.68041)] introduced a notion of helping and suggested the study of the class \(\text{P}_{\text{help}} ({\mathcal C})\) of the languages that can be helped by oracles in a given class \({\mathcal C}\). Later, \textit{K. Ko} [Theor. Comput. Sci. 52, 15--36 (1987; Zbl 0635.68039)]
CINTIOLI, Patrizio, SILVESTRI R.
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Ecotone Hierarchies

Ecological Applications, 1993
Ecological phenomena are evident over a broad spectrum of space and time scales. Ecotones, being defined as zones of transition between adjacent ecological systems, also must occur over an equally broad spectrum of space and time scales. Scale—dependent constraints influence ecological phenomena and resulting zones of transition; however, in ...
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Generalizing the KP Hierarchies: Pfaffian Hierarchies

Theoretical and Mathematical Physics, 2002
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