New posts in Characteristics

Finding the solution of $u_x + y u_y = 0$ using $u(0, y) = y^3$

Solve $\frac{1}{x}z_x+\frac{1}{y}z_y=4$

Quasi-linear pde $u_t + x u u_x = 0$, find shock time

How to solve $u_t + uu_x =\delta(x)$

Why is the solution single-valued?