*Valid November 28, 2024 - December 2, 2024 at Canadian stores and at indigo.ca, while quantities last, with $50.00 or more pre-tax purchase of eligible product(s), after discounts and plum points redemptions. Minimum purchase amount excludes gift cards, plum+ memberships, Love of Reading products/donations, and shipping costs. Selection may vary between stores and online.
Calculus of Variations/en-ca/calculus-of-variations/3446E2EB-F2A6-4DC7-958F-81819F8340EF.html3446E2EB-F2A6-4DC7-958F-81819F8340EF