Block-Toeplitz determinants, chess tableaux, and the type $\widehat{A_1}$ Geiss-Leclerc-Schroer $\varphi$-map

Jeanne Scott

We evaluate the Geiss-Leclerc-Schroer $\varphi$-map for shape modules over the preprojective algebra $\Lambda$ of type $\widehat{A_1}$ in terms of matrix minors arising from the block-Toeplitz rep…