complex numbers

Really Complex Matrices

Posted on June 29, 2019 by Samuel Nunoo

If you know how to multiply 2×2 matrices, and know about complex numbers, then you’ll enjoy this connection. Any complex number...

Posted on June 27, 2019 by Samuel Nunoo

Here’s a nice theorem due to Fibonacci, in 1202. Theorem. If integers N and M can each be written as the...

Posted on June 26, 2019 by Samuel Nunoo

Take N equidistant points on the unit circle. Pick one of those points, then draw chords from it to all...

Posted on June 26, 2019 by Samuel Nunoo

Everyone learns that the roots of a polynomial have a graphical interpretation: they’re the places where the function crosses the x-axis. But...