Ichiro Fujii

collaborators

3 papers

math.RT2026

Graded Casimir Elements and Central Extensions of Color Lie Algebras

Naruhiko Aizawa, Ichi Fujii, Jambulingam Segar +1

A color Lie algebra is a generalization of a Lie (super)algebra by an Abelian group $Γ$ . The underlying vector space and defining relations of the algebra are graded by $Γ$ , and a…

math-ph2025

Integrable $Z_{2}^{2}$ -graded super-Liouville Equation and Induced $Z_{2}^{2}$ -graded super-Virasoro Algebra

Naruhiko Aizawa, Ichi Fujii, Ren Ito +2

We present a framework for enlarging the construction of $Z_{2}^{2}$ -graded classical Toda theory from the class of $Z_{2}^{2}$ -graded Lie algebras to the class of $\math…

math-ph2025

An integrable hierarchy associated with loop extension of $Z_{2}^{2}$ -graded $osp (1∣2)$

N. Aizawa, I. Fujii, R. Ito

A hierarchy of $Z_{2}^{2}$ -graded integrable equations is constructed using the loop extension of the $Z_{2}^{2}$ -graded Lie superalgebra $osp (1∣2)$ . This hier…

Graded Casimir Elements and Central Extensions of Color Lie Algebras

Integrable Z22​-graded super-Liouville Equation and Induced Z22​-graded super-Virasoro Algebra

An integrable hierarchy associated with loop extension of Z22​-graded osp(1∣2)

Integrable $Z_{2}^{2}$ -graded super-Liouville Equation and Induced $Z_{2}^{2}$ -graded super-Virasoro Algebra

An integrable hierarchy associated with loop extension of $Z_{2}^{2}$ -graded $osp (1∣2)$