On the BKP hierarchy: additional symmetries, Fay identity and Adler-Shiota-van Moerbeke formula
classification
🌊 nlin.SI
keywords
hierarchyadditionaladler-shiota-vanformulaidentitymoerbekeproofsymmetries
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We give an alternative proof of the Adler-Shiota-van Moerbeke formula for the BKP hierarchy. The proof is based on a simple expression for the generator of additional symmetries and the Fay identity of the BKP hierarchy.
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