Trace formula for fourth order operators on the circle
classification
🧮 math-ph
math.MP
keywords
formulatracecirclefourthoperatororderdeterminedubrovin
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We determine the trace formula for the fourth order operator on the circle. This formula is similar to the famous trace formula for the Hill operator obtained by Dubrovin, Its-Matveev and McKean-van Moerbeke.
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