In the context of inverse problems, a mathematical model of the measurements is called the direct problem. To understand this term, let us consider a model for obstetric sonography. An ultrasonic ...

Grigori Perelman electrified the mathematical world 3 years ago with his claim to have solved one of the most famous problems in mathematics (SN: 6/14/03, p. 378: If It Looks Like a Sphere…). The ...

Many problems of geometric probability were solved using this extension. The mathematical theory of probability as we know it today was developed by Andrey Kolmogorov. In 1933, Kolmogorov issued his ...