ulam_spiral
ulam_spiral,
a Python code which
displays the integers as a spiral of grid cells, with the primes
highlighted, so show that they tend to fall along diagonals,
as discovered by Stanislaw Ulam.
Licensing:
The information on this web page is distributed under the MIT license.
Languages:
ulam_spiral is available in
a MATLAB version and
an Octave version and
a Python version.
Related Data and Programs:
python_plots,
a Python code which
uses plotting to illustrate a mathematical structure, such as
an iterative map, a fractal, a curve or surface.
Reference:
-
Martin Gardner,
Mathematical Games: The Remarkable Lore of the Prime Number,
Scientific American,
Volume 210, March 1964, pages 120-128.
-
Martin Gardner,
Sixth Book of Mathematical Diversion from Scientific American,
ISBN13: 978-0-226-28250-3,
University of Chicago Press, 1971.
-
Christian Hill,
The Ulam Spiral,
https://scipython.com/blog/the-ulam-spiral/
-
Cleve Moler,
primespiral.m,
Numerical Computing with MATLAB,
SIAM, 2004,
ISBN13: 978-0-898716-60-3,
LC: QA297.M625,
ebook:
https://www.mathworks.com/moler/chapters.html
Source Code:
Last modified on 21 August 2023.