A Mathematician with early access to XAI Grok 4.20, found a new Bellman function for one of the problems he had been working ...

Finding the derivative of a vector function is a fundamental concept in calculus that extends the idea of differentiation from scalar functions to functions that output vectors. This process is ...

NEW YORK and HOUSTON, Nov. 7, 2025 /PRNewswire/ -- A mismatch between two common tests for kidney function may indicate a higher risk for kidney failure, heart disease, and death, a new study shows.

Posts from this author will be added to your daily email digest and your homepage feed. In the years since, smart home adoption has stalled — because it’s complicated and confusing, and the value ...

BEIJING, Sept 19 (Reuters) - Xiaomi (1810.HK), opens new tab will issue a software update for over 115,000 of its popular SU7 electric sedans to fix potential safety issues when its assisted driving ...

Have you ever found yourself frustrated with an Excel workbook that seems to lag, break, or throw errors at the worst possible time? If so, there’s a good chance the culprit is one of Excel’s most ...

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 ...

In the late 19th century, Karl Weierstrass invented a fractal-like function that was decried as nothing less than a “deplorable evil.” In time, it would transform the foundations of mathematics.

The thyroid gland produces hormones that regulate metabolism, body temperature, and growth. Thyroid problems can cause weight changes, mood swings, and neck swelling. The thyroid is a small, butterfly ...