Copeland-Local-Minimax

Violation of Positive Involvement

Profile type: Profile
Config: 4 c, 5 v
Parameters: ∅

3 loses in the full profile, but 3 is a winner after removing voter with the ranking (3, 1, 0, 2):

Full profile:
+---+---+---+---+---+
| 1 | 1 | 1 | 1 | 1 |
+---+---+---+---+---+
| 0 | 1 | 2 | 3 | 3 |
| 3 | 0 | 1 | 1 | 2 |
| 2 | 3 | 0 | 0 | 1 |
| 1 | 2 | 3 | 2 | 0 |
+---+---+---+---+---+
Profile([[0, 3, 2, 1], [1, 0, 3, 2], [2, 1, 0, 3], [3, 1, 0, 2], [3, 2, 1, 0]], rcounts=[1, 1, 1, 1, 1], cmap={0: '0', 1: '1', 2: '2', 3: '3'})
Copeland-Local-Minimax winner is {0}

Profile with voter removed:
+---+---+---+---+
| 1 | 1 | 1 | 1 |
+---+---+---+---+
| 0 | 1 | 2 | 3 |
| 3 | 0 | 1 | 2 |
| 2 | 3 | 0 | 1 |
| 1 | 2 | 3 | 0 |
+---+---+---+---+
Profile([[0, 3, 2, 1], [1, 0, 3, 2], [2, 1, 0, 3], [3, 2, 1, 0]], rcounts=[1, 1, 1, 1], cmap={0: '0', 1: '1', 2: '2', 3: '3'})
Copeland-Local-Minimax winners are {0, 1, 2, 3}