In today's lecture: I obtained ¡­

In today's lecture: I obtained explicit solutions of the heat equation with the Fourier method.

In next lecture: I will cover the Neumann problem and derive stability estimates in terms of energy method and maximum principles.

For group lesson this friday: Prepare exercises 3.1, 3.4, 3,8, 3.11, 3.12 and 3.13.