The Type A component symmetric-matrix formula

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Let S\mathcal{S} be the set of symmetric binary matrices with no row sum greater than one. For s∈Ss\in\mathcal{S}, let A(s)A(s) be the set of upper-triangular positions containing a one, define F(s)F(s) as in the source, call ss admissible when no two links satisfy i<i′<j<j′i<i'<j<j', and let Adm⁡(b)\operatorname{Adm}(b) be the admissible matrices mapped to the binary string bb. For a Type A diagram D(b)D(b), Type A component formula.

ΨD(b)=∑s∈Adm⁡(b)F(s).\Psi_{D(b)}=\sum_{s\in\operatorname{Adm}(b)}F(s).

The formula is presented inside a conjecture environment and gives an explicit combinatorial expression for selected ground-state components; no proof or resolution is supplied.

References

Primary source

Keiichi Shigechi, “A Positive integral property on the ground state of the two-boundary Temperley–Lieb Hamiltonian”, arXiv:1412.7617 (2014).

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