Blog.CarlRobitaille.org

Indiscriminate laziness

Harvard mathematician answers 150-year-old chess problem

Posted on 2022/01/25 by Carl Robitaille

Harvard mathematician answers 150-year-old chess problem

Harvard mathematician answers 150-year-old chess problem https://t.co/3erIRnzAC5
— MathFeed (@MathFeed) January 24, 2022

An Application of Geography to Mathematics: History of the Integral of the Secant

Posted on 2022/01/25 by Carl Robitaille

An Application of Geography to Mathematics: History of the Integral of the Secant

How did anyone ever figure out that

∫secθ dθ = ln | sec θ + tan θ | + C ?

The surprising answer involves the Mercator map projection! Check out this great short article from @maanow's Mathematics Magazine (1980).https://t.co/pqKsdtDOZW pic.twitter.com/7Pn5QuKHcZ
— Patrick Honner (@MrHonner) January 23, 2022

Here’s a list of notable mathematicians that were part of the Bernoulli family between 1600 and 1800

Posted on 2022/01/25 by Carl Robitaille

Here's a list of notable mathematicians that were part of the Bernoulli family between 1600 and 1800
Jacob Bernoulli
Johann Bernoulli
Hieronymus Bernoulli
Nicolaus I Bernoulli
Daniel Bernoulli
Johann II Bernoulli
Johann III Bernoulli
Jacob II Bernoulli
— Fermat's Library (@fermatslibrary) January 22, 2022

Toroflux

Posted on 2022/01/24 by Carl Robitaille

Having fun with a Toroflux! You can get your own from the Momath gift shop https://t.co/DMqaSAJHYS pic.twitter.com/h1vPfI6Zyq
— Steven Strogatz (@stevenstrogatz) January 20, 2022

Naturally there's some neat math behind the toroflux, as @Mathologer explains here: https://t.co/49NL4IQSyF
— Steven Strogatz (@stevenstrogatz) January 20, 2022

Reading plots of a complex function

Posted on 2022/01/24 by Carl Robitaille

Reading plots of a complex function

Reading plots of a complex function https://t.co/c8QbMtIpk8 (by @JohnDCook)
— MathFeed (@MathFeed) January 21, 2022

Glasser’s function

Posted on 2022/01/20 by Carl Robitaille

Glasser’s function

New post: Glasser's functionhttps://t.co/gJeC8l1tLm pic.twitter.com/viTtFesfPz
— Analysis Fact (@AnalysisFact) January 20, 2022

‘Mathematics is an experimental science, and definitions do not come first, but later on.’ — Oliver Heaviside

Posted on 2022/01/20 by Carl Robitaille

'Mathematics is an experimental science, and definitions do not come first, but later on.' — Oliver Heaviside
— Analysis Fact (@AnalysisFact) January 19, 2022

Knuth is making backwards incompatible changes to fix bugs in something he wrote 54 years ago (TAOCP volume 1, 1968)!

Posted on 2022/01/20 by Carl Robitaille

Knuth is making backwards incompatible changes to fix bugs in something he wrote 54 years ago (TAOCP volume 1, 1968)!https://t.co/ecOf6PmSKc pic.twitter.com/ky0Bcey6Xa
— Russ Cox (@_rsc) January 19, 2022

Two finite fields of the same order must be isomorphic

Posted on 2022/01/20 by Carl Robitaille

Two finite fields of the same order must be isomorphic.
— Algebra Etc. (@AlgebraFact) January 19, 2022

‘At any moment there is only a fine layer between the ‘trivial’ and the impossible. Mathematical discoveries are made in this layer.’ — Kolmogorov

Posted on 2022/01/20 by Carl Robitaille

'At any moment there is only a fine layer between the 'trivial' and the impossible. Mathematical discoveries are made in this layer.' — Kolmogorov
— Algebra Etc. (@AlgebraFact) January 18, 2022