Mauthausen-Gusen concentration camp | Auschwitz concentration camp | Dachau concentration camp | Bergen-Belsen concentration camp | Sachsenhausen concentration camp | Ravensbrück concentration camp | Buchenwald concentration camp | Stutthof concentration camp | Jasenovac concentration camp | Grini concentration camp | Theresienstadt concentration camp | Flossenbürg concentration camp | Neuengamme concentration camp | Year 2000 problem | Waring's problem | The Final Problem | Gross-Rosen concentration camp | Ulven concentration camp | The Problem with Popplers | Nazi concentration camps in Norway | Majdanek concentration camp | Hume and the Problem of Causation | Gusen concentration camp | Frölicher spectral sequence | Female guards in Nazi concentration camps | Falstad concentration camp | Ebensee concentration camp | Dirichlet problem | Concentration | concentration |
Fredholm equations arise naturally in the theory of signal processing, most notably as the famous spectral concentration problem popularized by David Slepian.