The Covid19 virus (courtesy U.S. Center for Disease Control and Prevention)
A pandemic is upon us
As this is being written (April 2020), the entire world is gripped in the throes of the rapidly spreading and deadly Covid19 pandemic. International travel has been greatly curtailed worldwide; many businesses, large and small, have shut their doors; many K12 schools and universities have closed; and entire regions and nations, encompassing well over one billion people, have been ordered to remain in their homes.
As of the current date (28 April 2020), the Johns Hopkins University Coronavirus Resource Center has tallied 3,062,000
Continue reading Pseudoscience in the age of Coronavirus
We are happy to announce the publication of “From Analysis to Visualization: A Celebration of the Life and Legacy of Jonathan M. Borwein”, a compilation of research papers devoted to the memory of Jonathan Borwein. The book is the proceedings of a conference held in Borwein’s honor in September 2017 at Newcastle, Australia, near where Prof. Borwein taught for several years before passing away in August 2016.
The volume has been published by Springer, and is available for purchase from the Springer website, or from Amazon.com.
The individual papers are authored by many of Jonathan Borwein’s colleagues and collaborators. Here
Continue reading “From Analysis to Visualization: A Celebration of the Life and Legacy of Jonathan M. Borwein”
An age of unparalleled progress
Though many do not recognize the fact, behind the disturbing headlines that dominate the news today, scientific progress marches forward, unabated and undiminished. Just within the past 100 years, researchers have discovered the theory of relativity, quantum mechanics and the standard model; unraveled the structure of DNA; sequenced the human genome; discovered the accelerating universe; observed extrasolar planets orbiting thousands of distant stars; and detected the collisions of black holes. See this Math Scholar article for additional details.
Spurred by these scientific advances, human technology has advanced at an astonishing pace: advances in medical
Continue reading Why are people embracing astrology in an age of science?
I have prepared a new paper containing a catalogue of 72 summation formulas, integral formulas and iterative algorithms for Pi. The catalogue contains both classical and modern formulas, ranging from Archimedes’ 2200yearold algorithm to intriguing formulas found by Ramanujan and the quadratic, cubic, quartic and nonic algorithms of Jonathan Borwein and Peter Borwein, the latter of which double, triple, quadruple and ninetimes, respectively, the number of correct digits with each iteration.
The catalogue of formulas and iterative algorithm is followed by results of carefully designed computer implementations, which enable one to compare the relative speed of these formulas.
Continue reading PiDay 2020: A catalogue of formulas involving pi, with analysis
Yes, it is that time of year — Pi Day (March 14, or 3/14 in North American month/day date notation) is here.
So in honor of the occasion, I have constructed a new crossword puzzle — see below. This puzzle honors several of the key persons through history who have made significant contributions to the theory and computation of Pi.
This puzzle conforms to the New York Times crossword conventions. As far as difficulty level, it would be comparable to the NYT Tuesday or Wednesday puzzles (the NYT puzzles are graded each week from Monday [easiest] to Saturday [most difficult]).
Continue reading Pi Day 2020: A new crossword puzzle
Credit: Quanta Magazine
Introduction
A growing controversy over the multiverse and the anthropic principle has exposed a major fault line in modern physics and cosmology. Some researchers see the multiverse and the anthropic principle as inevitable, others see them as an abdication of empirical science. The controversy spans quantum mechanics, inflationary Big Bang cosmology, string theory, supersymmetry and, more generally, the proper roles of experimentation and mathematical theory in modern science.
The “many worlds interpretation” of quantum mechanics
Since the 1930s, when physicists first developed the mathematics behind quantum mechanics, researchers have found that this theory appears to
Continue reading Universe or multiverse? The war rages on
Introduction
In the past few decades, modern science has uncovered a universe that is far vaster and more aweinspiring than ever imagined before, together with a set of elegant natural laws that deeply resonate with the idea of a cosmic lawgiver (and isn’t it remarkable that we humans can uncover and understand these laws). Along this line, 46% of Americans (including 54% of atheists, 55% of agnostics and 43% of nones) say that they experience a “deep sense of wonder about the universe” on at least a weekly basis [Masci2016].
In spite of these exhilarating developments, some writers,
Continue reading Do probability arguments refute evolution?
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Factorization and cryptography
Until a few decades ago, number theory, namely the study of prime numbers, factorization and other features of the integers, was widely regarded as the epitome of pure mathematics, completely divorced from considerations of practical utility. This sentiment was expressed most memorably by British mathematician G.H. Hardy (best known for mentoring Ramanujan and results on the Riemann Zeta function), who wrote in his book A Mathematician’s Apology (1941),
I have never done anything “useful”. No discovery of mine has made, or is likely to make, directly or indirectly, for good
Continue reading New factorization advances: Is your bank account safe?
Gregory Zuckerman, author of The Greatest Trade Ever, has published a new book highlighting the life and work of Jim Simons, who, at the age of 40, walked away from a very successful career as a research mathematician and cryptologist to try his hand at the financial markets, and ultimately revolutionized the field. Zuckerman’s new book is titled The Man Who Solved the Market: How Jim Simons Launched the Quant Revolution.
Upbringing and academic career
Simons’ background hardly suggested that he would one day lead one of the most successful, if not the most successful, quantitative hedge fund operation in
Continue reading Jim Simons: The man who solved the market
Credit: IPCC
The facts of climate change
At this point in time, the basic facts of climate change are not disputable in the least. Careful planetwide observations by NASA and others have confirmed that 2018 was the fourthwarmest year in recorded history. The only warmer years were 2016, 2017 and 2015, respectively, and 18 of the 19 warmest years in history have occurred since 2001. Countless observational studies and supercomputer simulations have confirmed both the fact of warming and the conclusion that this warming is principally due to human activity. These studies and computations have been scrutinized in great
Continue reading The scientific debate is over: it is time to act on climate change

