It is well known that baby Mandelbrot sets are homeomorphic to the original one. We study Tricorns appearing in Tricorn, which connectedness locus of quadratic anti-holomorphic polynomials, and show dynamically natural straightening map from a Tricorn discontinuous at infinitely many explicit parameters. This first example discontinuity maps on real two-dimensional slice an analytic family holo...

The coronary "accordion" effect is a rare pseudo-complication of percutaneous coronary intervention (PCI). It is usually observed due to straightening and shortening of tortuous vessels with stiff guidewires during PCI. In this case report, we present an interesting case of the coronary accordion effect observed in a 52-year-old woman undergoing PCI.