I have just uploaded to the arXiv the third installment of my “heatwave” project, entitled “Global regularity of wave maps V. Large data local well-posedness in the energy class… 676 more words

## Tags » Nonlinear Wave Equations

#### John's blowup theorem for the nonlinear wave equation

Today I’d like to discuss (part of) a cute and surprising theorem of Fritz John in the area of non-linear wave equations, and specifically for the equation… 2,170 more words