File:Nimbers 0...15 multiplication.svg

Summary

Description

Multiplication table of Nimbers; compare Sloane'sA051775, Sloane'sA051910

The nonzero elements form the Cayley table of Z15, as shown below.

Below the dual matrix, showing permuted binary Walsh matrices.
The dark gray fields have an odd binary digit sum, and also form a permuted binary Walsh matrix.
A closer look at these five permutations can be found here.

Image set Operation tables with binary digits (16×16 with dual matrices)
This SVG was created with Inkscape.
Date
Source Own work
Author
Watchduck
You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".

Cyclic group

Nimber multiplication
 1   4   6  14   5   2   8  11   7  10   3  12  13   9  15
 4   6  14   5   2   8  11   7  10   3  12  13   9  15   1
 6  14   5   2   8  11   7  10   3  12  13   9  15   1   4
14   5   2   8  11   7  10   3  12  13   9  15   1   4   6
 5   2   8  11   7  10   3  12  13   9  15   1   4   6  14
 2   8  11   7  10   3  12  13   9  15   1   4   6  14   5
 8  11   7  10   3  12  13   9  15   1   4   6  14   5   2
11   7  10   3  12  13   9  15   1   4   6  14   5   2   8
 7  10   3  12  13   9  15   1   4   6  14   5   2   8  11
10   3  12  13   9  15   1   4   6  14   5   2   8  11   7
 3  12  13   9  15   1   4   6  14   5   2   8  11   7  10
12  13   9  15   1   4   6  14   5   2   8  11   7  10   3
13   9  15   1   4   6  14   5   2   8  11   7  10   3  12
 9  15   1   4   6  14   5   2   8  11   7  10   3  12  13
15   1   4   6  14   5   2   8  11   7  10   3  12  13   9

Table of the same operation, showing the characteristic diagonals of a cyclic group's Cayley table

In both tables it can be seen, that e.g. 4 * 7 = 10

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Category:Nimber multiplication Category:Multiplication tables Category:Walsh matrix of order 16; permuted by Walsh permutation Category:Cayley tables of C15 Category:Nimber operations (image set)
Category:CC-BY-3.0 Category:Cayley tables of C15 Category:GFDL Category:License migration redundant Category:Multiplication tables Category:Nimber multiplication Category:Nimber operations (image set) Category:Self-published work Category:Walsh matrix of order 16; permuted by Walsh permutation