Vertex Pharmaceuticals (VRTX) ended the recent trading session at $381.87, demonstrating a +1.39% change from the preceding day's closing price. The stock outpaced the S&P 500's daily loss of 0.5%. At ...

One string in each of the following pairs can be unraveled into a circle—the so-­called unknot. Which one is it? Show puzzle solution The knots at the top left and the bottom right can be unraveled ...

The totality of the eigenvalues of the Laplacian of a compact Riemannian manifold is called the spectrum. We describe how the spectrum determines a Riemannian manifold. The continuity of the ...