In a recent write-up, [David Delony] explains how he built a Wolfram Mathematica-like engine with Python. Core to the system is SymPy for symbolic math support. [David] said being able to work ...

Abstract: The log-sum function as a penalty has always been drawing widespread attention in the field of sparse problems. However, it brings a non-convex, non-smooth and non-Lipschitz optimization ...

These simple operations and others are why NumPy is a building block for statistical analysis with Python. NumPy also makes ...

To add a formula in Google Sheets, click the cell where you want the answer, then choose one of the hundreds of functions.

Have you ever felt like Excel was holding back its true potential? While most of us rely on its familiar features to crunch numbers and organize data, there’s a hidden layer of functionality that ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Abstract: A combined cryptosystem with symmetric keys for encrypting messages is proposed. Its unique feature is the use of functions of a real variable as keys instead of natural numbers. Eight key ...