Database of two-weight codes
This module stores a database of two-weight codes.
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Found by Axel Kohnert [Kohnert07] and shared by Alfred Wassermann. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
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Found by Axel Kohnert [Kohnert07] and shared by Alfred Wassermann. |
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Shared by Eric Chen [ChenDB]. |
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From [Disset00] |
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Shared by Eric Chen [ChenDB]. |
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From [Disset00] |
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From [Disset00] |
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From [Disset00] |
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From Bouyukliev and Simonis ([BS03], Theorem 4.1) |
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Shared by Eric Chen [ChenDB]. |
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Shared by Eric Chen [ChenDB]. |
REFERENCE:
[ChenDB] | (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15) Eric Chen,
Online database of two-weight codes,
http://moodle.tec.hkr.se/~chen/research/2-weight-codes/search.php |
TESTS:
Check the data’s consistency:
sage: from sage.coding.two_weight_db import data
sage: for code in data:
....: M = code['M']
....: assert code['n'] == M.ncols()
....: assert code['k'] == M.nrows()
....: w1,w2 = [w for w,f in enumerate(LinearCode(M).weight_distribution()) if w and f]
....: assert (code['w1'], code['w2']) == (w1, w2)