In a story by this author, Professor Weierstrass calls a mathematician a “gift to me alone” and says that he “forgets” she is a woman. Sofia Kovalevskaya’s life inspired a story by this author, who also wrote a story in which three boys about to swim in a river find a dead optometrist in a submerged car. This author of “Too Much Happiness” and “The Love of a Good Woman” wrote a story in which a girl with Down syndrome plays the title Gluck piece beautifully at Mrs. Marsalles’s piano recital. In another story by this author, Nichola is estranged from her mother, Janet, who visits a Toronto planetarium before discussing the title objects with her hospitalized father. For 10 points, name this Canadian author of “Dance of the Happy Shades” and “The Moons of Jupiter.” ■END■