The Game of Logic | Page 8

Lewis Carroll
| |
| | | Some y are x';
| | | i.e. Some nice are not-new.
----- |
| | |
| 1 | |
| | |
----- |
|
----- |
| | | No y are x;
| 0 | | i.e. No nice are new.
| | |
----- | [Observe that this is merely
another way of
| | | expressing "No new are nice."]
| | |
| | |

----- |
|
----- |
| | |
| | | No y are x';
| | | i.e. No nice are not-new.
----- |
| | |
| 0 | |
| | |
----- |
|
----- |
| | |
| 1 | | Some y are x, and some are x';
| | | i.e. Some nice are new, and some
are
----- | not-new.
| | |
| 1 | |
| | |
----- |
|
----- |
| | |
| 0 | | No y are x, and none are x'; i.e.
No y
| | | exist;
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