The real foundation of China’s 🇨🇳 STEM and AI rise was not the Western liberal arts model. It was the opposite: the systematic dismantling of that model and the large-scale import of Soviet curricula, textbooks, and teaching methods.

After 117 years, A. P. Kiselev's Elements of Differential and Integral Calculus is now available in English. 🔥 This is the calculus textbook from the tradition that trained every key Soviet mathematician, physicist, and engineer through most of the 20th century.

When life gives you lemons, don't just make lemonade—build a lemonade empire. I’ve been championing conformal prediction since it was an obscure niche topic and it's now become one of the hottest topics in machine learning.

The Finland “math miracle” was one of the biggest education myths of the last 20 years. A strong PISA result got inflated into a fantasy of deep mathematical excellence. The world did not discover a math civilisation. It bought a story.

When you open Amazon and see your forecasting book sitting above Hyndman’s classic — supported by an Amazon marketing campaign that’s helping fund the luxury colour printing costs. https://a.co/d/07ok754K

Kiselev Algebra II is #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

The hidden villains of tabular data www.youtube.com/watc...

scikit-learn has a contradiction hiding in plain sight. LogisticRegression applies L2 regularisation by default (C=1.0). Regularisation shrinks coefficients toward zero, which flattens probabilities toward 0.5. This is a deliberate injection of bias.

The hardcover edition of Kiselev’s Arithmetic is gaining on the paperback—and for good reason. Its sturdy, classic cover is built to last, making it a great choice for children.

Kiselev Algrebra Part II is now available on Amazon in paperback and hard copy. It has never been easier to learn school algebra https://a.co/d/00dIcO9Q E-book valeman.gumroad.com/...

Kiselev Algebra II is #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

After 117 years, A. P. Kiselev's Elements of Differential and Integral Calculus is now available in English. 🔥 This is the calculus textbook from the tradition that trained every key Soviet mathematician, physicist, and engineer through most of the 20th century.

They did not use conformal prediction .

Forecasting is broken. Not quietly broken. Structurally broken. For four decades the M-competitions cultivated the mantra that “simple methods always win.” Exponential smoothing wasn’t just a tool — it was raised to Golden Calf status.

When you open Amazon and see your forecasting book sitting above Hyndman’s classic — supported by an Amazon marketing campaign that’s helping fund the luxury colour printing costs. https://a.co/d/07ok754K

Kiselev Algebra II is #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

Machine learning is incredibly powerful, but that doesn’t mean ML academics can easily beat the stock market. www.youtube.com/watc...

Another paper showing why conformal prediction deserves serious attention in self-driving. The paper is: “Uncertainty-Aware Vision-based Risk Object Identification via Conformal Risk Tube Prediction.” The core idea is exactly the right one. In driving, risk is not a neat binary label.

Knowing is cheap. Performing is what counts. Video based on my English translation of Kiselev’s iconic Arithmetic: www.youtube.com/watc...

Kiselev Algebra II is not #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

After 117 years, A. P. Kiselev's Elements of Differential and Integral Calculus is now available in English. 🔥 This is the calculus textbook from the tradition that trained every key Soviet mathematician, physicist, and engineer through most of the 20th century.

A Harvard freshman in the new intro calc course passed AP Calculus in high school. She said it felt like “memorising formulas,” not understanding. That’s the difference between AP Calc and Kiselev. Kiselev’s Calculus, first English translation, out now.

Performing math vs knowing math. That's the difference between modern textbooks and one written in 1884. A.P. Kiselev was a Russian schoolteacher who got tired of watching students struggle with verbose, overcomplicated textbooks that taught procedures without understanding.

When you open Amazon and see your forecasting book sitting above Hyndman’s classic — supported by an Amazon marketing campaign that’s helping fund the luxury colour printing costs. https://a.co/d/07ok754K

Kiselev Algebra II is not #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

There is only ONE technology today that can produce calibrated predictive distributions with guarantees. Not Bayesian. Not deep ensembles. Not quantile regression.

Kiselev Algebra II is not #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

After 117 years, A. P. Kiselev's Elements of Differential and Integral Calculus is now available in English. 🔥 This is the calculus textbook from the tradition that trained every key Soviet mathematician, physicist, and engineer through most of the 20th century.

Kiselev’s Algebra I is now #1 in Amazon’s Hot New Releases in the Elementary Algebra category.

How a Rivalry Between Mathematicians Birthed Least Squares—And Changed Data Forever Picture this: Europe, 1801. A new planet-like object—Ceres—flashes across the night sky, then disappears behind the sun. Astronomers panic. Without a way to predict its orbit, Ceres could be lost forever.

Year 2026. Hard to believe people still use ROC AUC and call it “data science.”

When you open Amazon and see your forecasting book sitting above Hyndman’s classic — supported by an Amazon marketing campaign that’s helping fund the luxury colour printing costs. https://a.co/d/07ok754K

Kiselev Algebra II is not #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

The only way to learn math is to practice solving problems. If you want to learn probability - #2 book 📕 on Awesome Math Books. github.com/valeman/A...#2 #math

Want to learn mathematical analysis like a pro? Here is the book that elite math programs in Russia (MSU) and China 🇨🇳 are using. USSR math book (MSU). https://t.co/CoSI1M2XYd #math

A lot of data scientists in 2026 still either skip EDA or do it wrong. They think EDA is about making pretty charts. It is not. EDA is not a gallery of polished plots. EDA is not a box-ticking exercise before modeling. EDA is not “let’s run a few charts and move on.”

My new article 'I Took the Syntetos–Boylan Plot Everyone Loves — and Turned It Into an X-Ray of the Entire Demand Portfolio.' has been published on Medium valeman.medium.com/i...

When you check for new papers and see your new paper.

Kiselev Algebra II is not #1 in hot 🔥🔥🔥 new releases on Amazon in algebra category. 🚀 https://a.co/d/0cJnsvZE

In September 2024, Harvard quietly added a new course to its math catalogue. Math MA5. Two sections, ten students each, most of them declaring majors in economics or biology. The course’s purpose: to teach calculus to Harvard freshmen who could not yet do calculus.

After 117 years, A. P. Kiselev's Elements of Differential and Integral Calculus is now available in English. 🔥 This is the calculus textbook from the tradition that trained every key Soviet mathematician, physicist, and engineer through most of the 20th century.

Recently, I published a new training-free forecasting method that significantly outperforms DeepNTPS from Amazon. Amazon has hundreeds of people working on forecasting spending tens of millions of dollars onresearch and development.

AP Calculus teaches you to memorise. Kiselev teaches you to prove. Soviet 16-year-olds did the latter and won admission to MIPT Phystech. First complete English translation of Kiselev’s Calculus is out.

In 1703, Leonty Magnitsky published a book that would shape Russian mathematics for generations. The book was Arithmetic (1703).

My new article 'How Many Children Learned Mathematics From Kiselev’s Textbooks? has been published on Medium medium.com/p/ff4efce...

When you open Amazon and see your forecasting book sitting above Hyndman’s classic — supported by an Amazon marketing campaign that’s helping fund the luxury colour printing costs. https://a.co/d/07ok754K

Kiselev Algrebra Part II is now available on Amazon in paperback and hard copy. It has never been easier to learn school algebra https://a.co/d/00dIcO9Q E-book valeman.gumroad.com/...

Three US universities, three months, three signals. Harvard launched Math MA5 in 2024 — a new introductory calculus course for students who arrived unprepared. Most of the students in it had declared majors in economics or biology, fields that require calculus to advance.

A new video 'Kiselev’s Geometric Bridge' #math

Harvard lanzó en 2024 un nuevo curso de cálculo introductorio porque sus estudiantes recién admitidos no podían con el cálculo normal. Algunos habían aprobado AP Calculus en la secundaria. Una estudiante dijo que en AP Calc se sentía como “memorizar fórmulas,” no entender.