Projective Spectrum and Cyclic Cohomolgy

Patrick Cade, Rongwei Yang

For a tuple $A=(A_1,A_2,...,A_n)$ of elements in a unital algebra $\mathcal{B}$ over $\mathbb{C}$, its {\em projective spectrum} $P(A)$ or $p(A)$ is the collection of $z\in…