L2 space Memes

The perfect illustration of why physicists and mathematicians can't sit at the same lunch table. Physicists just wave their hands and say "it's that integral thingy" while mathematicians are performing Olympic-level mental gymnastics with L² spaces and distribution theory. Next time a physicist smugly tells you they "understand" Fourier transformations, show them this and watch their confidence dissolve faster than their approximations. Pure mathematicians don't just want the answer—they want to torture themselves with rigor first.