| Abstract: |
| The totally non-negative pfaffian (TNNP) is define for a skew-symmetric matrix such that all the sub-pfaffians are non-negative.It appears in the pfaffian structure of tau-function for the non-singular web solitons of the BKP
equation . One constructs TNNP using the Perfect matching, chord diagram and the Dyck paths enumeration. Its tridiagonal form is also investigated. |
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