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Table 2 One to one function

From: A group from Hackenbush game

Integer numbers (Z)

 

Sets of classes

.

.

.

.

.

.

.

.

.

− 2

↔

Class of − 2 game

− 1

↔

Class of − 1 game

0

↔

Class of 0 game

1

↔

Class of 1 game

2

↔

Class of 2 game

.

.

.

.

.

.

.

.

.