Duality and dynamical supersymmetry breaking in Spin(10) with a spinor

We study N = 1 supersymmetric Spin(10) chiral gauge theories with a single spinor representation and N vector representations. We present a dual description in terms of an N = 1 supersymmetric SU(N − 5) chiral gauge theory with a symmetric tensor, one fundamental and N antifundamental representations. The Spin(10) theory with N = 0 breaks supersymmetry at strong coupling; we study how this arises at weak coupling in the dual theory, which is a spontaneously broken gauge theory. Also, we recover various known dualities, find new dual pairs and generate new examples of dynamical supersymmetry breaking.