Have been using Facebook mobility data to map social distancing and how it changes in Australia at maths.adelaide.edu.au/lewis.mitchell…. tl;dr: social distancing has been gradually waning over the past 3 weeks or so, across all states.

It is poss to divide a square into 3 pieces of equal area & equal area; or into 3 pieces of equal area with equal portions of the square's perimeter. Possible to divide a square into 3 pieces with equal perims & equal portions of the square's perimeter? With all three features?

Here is a talk presenting the #SafeBlues idea: youtu.be/zgDVv8x03U4

It is possible to divide a square into three pieces so that all three pieces have the same area, the same perimeter, and possess the same proportion of the square's perimeter. Can the same, for sure, be done for any non-square rectangle?

And a #SafeBlues talk is here: youtube.com/watch?v=zgDVv8…

Is there a rectangle that can be cut with three straight-line segments into three pieces of equal area, equal perimeter, and each possessing an equal portion the the rectangle's perimeter? If so, what are its dimensions?

Oh what fun to do tie-folding with such a fabulous community of high-schoolers in the DC metro area! John Chase For those curious, here's the unsolved math (Artin's conjecture) behind the scenes. youtu.be/y3HxU4WMvdA The Global Math Project

Here is the seminar of Lewis Mitchell youtube.com/watch?v=CoDvLZ…

Excited to present in BrisScience about #SafeBlues. @ACEMathStats Statistical Society of Australia

40% of the proceeds (my share) will be donated to ASRC (Asylum Seeker Resource Centre). The other part will help SSA.

Join me for a public (Zoom) lecture on COVID modeling and the Safe Blues idea. Monday 6:30pm, Brisbane Time (mid morning in Israel and Europe, and sleeping time in the US). BrisScience UQ Science science.uq.edu.au/event/session/…

Join me for this in a few hours. #SafeBlues #COVID19Aus

Controlling the rotation of hemispheres with a sine wave.

[EARLY BIRD REMINDER] Online workshop with Yoni Nazarathy Yoni Nazarathy on #Julia for Statistics and Data Science. Early bird registration ends tomorrow! statsoc.org.au/event-3888909

A very good high level talk by Yoni Nazarathy on SafeBlues, an application of #julialang and #sciml for combating COVID-19 youtube.com/watch?v=aC7Cha…

Given an a-by-b rectangle, a square of the same perimeter has side the arithmetic mean of a & b; the same area, the geometric mean of a & b; the same diagonal, the quadratic mean of a & b. A square of side the harmonic mean of a & b has what in common with the original rectangle?

A self-referential die has faces labeled with fractions so that the chance of seeing the fraction you roll is the fraction you see. There are four 6-sided SR dice. There are zero 2-sided SR dice (coins). For world fame, find an explicit formula for the number of N-sided SR dice.

Some kind of average A(a,b) of two numbers a and b should at least: i) always be a value between a & b ii) satisfy A(a,b) =A(b,a) iii) satisfy A(ka,kb)=kA(a,b). If A(a,b) behaves like an average, must f^(-1)(A(f(a),f(b)) behave like one too for any invertible function f?

Prove that each positive integer point on the vertical axis is collinear with two points with integer coordinates on the curve of the y = -x^2 graph. With how many such pairs is the point (0,1000) collinear?

Finished day 1 of learning #julialang from Yoni Nazarathy 👩‍💻 And for myself, I have to check that Julia works with #rmarkdown (it does!)