what do a square-wheeled bicycle, a 17th-century french painting, and the indiana legislature all have in common? they appear among the many bright stars on the mathematical horizon, or perhaps, more correctly in the math[ematical] horizons. math horizons, the undergraduate magazine started by the maa in 1994, publishes articles to introduce 2022年亚洲世界杯预选赛 to the world of mathematics outside the classroom. some of mathematics’ best expositors have written for mh over the years; here are some of the highlights from the first ten years of horizons.