Further Questions about Tetrads
What do experts say?

Comments from tetrad experts

Sent in emails about this website and especially about the surprising new tetrad of question 17.

George Sicherman

2020-02-15: Your new website is wonderful. It is full of mathematical and historical interest.
Your website plugs a big hole in our knowledge of tetrads and their history.
2020-02-20 (new tetrad): Walter, this is amazing. It seems almost like an optical illusion. Hearty congratulations on finding it!
2020-03-01: In case you did not know, your results are new and exciting. I am happy to see that you are getting some long-delayed attention.

Andrejs Cibulis

2020-02-18: Thank you very much for so valuable and nice material.
2020-02-27 (new tetrad): Thank you very much for your work and your new surprising constructions.

Scott Kim

2020-02-27 (new tetrad): Thanks for sharing this. I wouldn't have thought that is possible. Wonderful that it is based on the Voderberg tiles, which have always fascinated me. I also enjoyed seeing the circular construction on your site, which was new to me.

Karl Scherer

- Who said that plane geometry is over-analyzed and boring?? Well, appearances can be deceptive.
Just because the definition of a tetrad is extremely simple and easy to be grasped even by a child, that doesn't mean that the set of solutions is totally known.
- Walter gives some nice step-by-step descriptions how he found one of his gems, thereby offering the reader guidance into the tetrads realm of Mathematics.
- Several of his solutions are so sophisticated and bizzare that it seems impossible to conceive that they can ever be found by a computer. That makes the hunt for more interesting tetrads the more exciting.
- Walter has breathed new life into the quite forgotten art of finding new tetrads. For that fact alone he deserves maximum praise.

References Tetrads Contents

 Walter Trump, Nürnberg, Germany, ms(at)trump.de, © 2020-02-12 (last modified: 2020-03-05)